{"title":"Foster 210 Series Couplers","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003eFoster 210 Series pneumatic quick couplers and plugs, interchangeable with ARO 210 Series 1\/4\" body air fittings. Rated 300 PSI, one-way shut-off, with manual or automatic sockets. Brass\/steel, 303 stainless, and nickel-plated options; steel plugs.\u003c\/p\u003e","products":[{"product_id":"foster-w3-360d-replacement-seal","title":"Foster W3-360D (Replacement Seal)","description":"\u003cp\u003eReplacement seal for foster ARO 210 Series couplers\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":41527387914287,"sku":"FOST W3-360D (1)","price":0.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/products\/image.jpg?v=1671482819"},{"product_id":"foster-210-10-210-series","title":"Foster 210-10, 1\/4\" ARO Plug x 1\/4\" Male NPT, 210 Series, Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. The Foster \u003cstrong\u003e210-10\u003c\/strong\u003e is a steel 1\/4\" plug from the Foster 210 Series, rated to 300 PSI and built in the USA for shop air, tools, and pneumatic service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 210 Series (ARO 210 Interchange)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 210-10\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" ARO 210\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 1\/4\" Male NPT, MPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40F to +250F (Buna seal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this plug\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eARO 210 interchange\u003c\/strong\u003e — which means it plugs into any matching ARO 210-style 1\/4\" socket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteel\u003c\/strong\u003e — which means durable service under repeated high-pressure cycling.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt interchanges with ARO 210 Series sockets — a widely used 1\/4\" air-coupler style.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure is it rated for?\u003c\/strong\u003e\u003cbr\u003eRated to 300 PSI working pressure, -40F to +250F with Buna seals.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and air service. Pair this plug with a matching 1\/4\" ARO 210 socket for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529361678383,"sku":"FOST 210-10 (1)","price":2.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210-10s-s-210-series","title":"Foster 210-10S\/S, 1\/4\" ARO Plug x 1\/4\" Male NPT, 210 Series, 303 Stainless Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. The Foster \u003cstrong\u003e210-10S\/S\u003c\/strong\u003e is a 303 stainless steel 1\/4\" plug from the Foster 210 Series, rated to 300 PSI and built in the USA for shop air, tools, and pneumatic service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 210 Series (ARO 210 Interchange)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 210-10S\/S\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" ARO 210\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 1\/4\" Male NPT, MPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 303 Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40F to +250F (Buna seal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this plug\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eARO 210 interchange\u003c\/strong\u003e — which means it plugs into any matching ARO 210-style 1\/4\" socket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e303 Stainless Steel\u003c\/strong\u003e — which means durable service under repeated high-pressure cycling.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt interchanges with ARO 210 Series sockets — a widely used 1\/4\" air-coupler style.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure is it rated for?\u003c\/strong\u003e\u003cbr\u003eRated to 300 PSI working pressure, -40F to +250F with Buna seals.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and air service. Pair this plug with a matching 1\/4\" ARO 210 socket for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529361711151,"sku":"FOST 210-10S\/S (1)","price":15.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210-11-210-series","title":"Foster 210-11, 1\/4\" ARO Plug x 1\/4\" Female NPT, 210 Series, Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. The Foster \u003cstrong\u003e210-11\u003c\/strong\u003e is a steel 1\/4\" plug from the Foster 210 Series, rated to 300 PSI and built in the USA for shop air, tools, and pneumatic service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 210 Series (ARO 210 Interchange)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 210-11\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" ARO 210\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 1\/4\" Female NPT, FPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40F to +250F (Buna seal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this plug\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eARO 210 interchange\u003c\/strong\u003e — which means it plugs into any matching ARO 210-style 1\/4\" socket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteel\u003c\/strong\u003e — which means durable service under repeated high-pressure cycling.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt interchanges with ARO 210 Series sockets — a widely used 1\/4\" air-coupler style.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure is it rated for?\u003c\/strong\u003e\u003cbr\u003eRated to 300 PSI working pressure, -40F to +250F with Buna seals.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and air service. Pair this plug with a matching 1\/4\" ARO 210 socket for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529361842223,"sku":"FOST 210-11 (1)","price":2.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210-11s-s-210-series","title":"Foster 210-11S\/S, 1\/4\" ARO Plug x 1\/4\" Female NPT, 210 Series, 303 Stainless Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. The Foster \u003cstrong\u003e210-11S\/S\u003c\/strong\u003e is a 303 stainless steel 1\/4\" plug from the Foster 210 Series, rated to 300 PSI and built in the USA for shop air, tools, and pneumatic service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 210 Series (ARO 210 Interchange)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 210-11S\/S\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" ARO 210\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 1\/4\" Female NPT, FPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 303 Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40F to +250F (Buna seal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this plug\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eARO 210 interchange\u003c\/strong\u003e — which means it plugs into any matching ARO 210-style 1\/4\" socket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e303 Stainless Steel\u003c\/strong\u003e — which means durable service under repeated high-pressure cycling.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt interchanges with ARO 210 Series sockets — a widely used 1\/4\" air-coupler style.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure is it rated for?\u003c\/strong\u003e\u003cbr\u003eRated to 300 PSI working pressure, -40F to +250F with Buna seals.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and air service. Pair this plug with a matching 1\/4\" ARO 210 socket for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529361874991,"sku":"FOST 210-11S\/S (1)","price":13.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210-12-210-series","title":"Foster 210-12, 1\/4\" ARO Plug x 1\/8\" Male NPT, 210 Series, Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. The Foster \u003cstrong\u003e210-12\u003c\/strong\u003e is a steel 1\/4\" plug from the Foster 210 Series, rated to 300 PSI and built in the USA for shop air, tools, and pneumatic service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 210 Series (ARO 210 Interchange)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 210-12\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" ARO 210\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 1\/8\" Male NPT, MPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40F to +250F (Buna seal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this plug\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eARO 210 interchange\u003c\/strong\u003e — which means it plugs into any matching ARO 210-style 1\/4\" socket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteel\u003c\/strong\u003e — which means durable service under repeated high-pressure cycling.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt interchanges with ARO 210 Series sockets — a widely used 1\/4\" air-coupler style.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure is it rated for?\u003c\/strong\u003e\u003cbr\u003eRated to 300 PSI working pressure, -40F to +250F with Buna seals.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and air service. 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Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529362038831,"sku":"FOST 210-1513 (1)","price":13.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210-16-210-series","title":"Foster 210-16, 1\/4\" ARO Plug x 1\/4\" Hose ID, 210 Series, Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. 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Pair this plug with a matching 1\/4\" ARO 210 socket for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529362071599,"sku":"FOST 210-16 (1)","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210-165-210-series","title":"Foster 210-165, 1\/4\" ARO Plug x 5\/16\" Hose ID, 210 Series, Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. 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Pair this plug with a matching 1\/4\" ARO 210 socket for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529362104367,"sku":"FOST 210-165 (1)","price":11.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210-17-210-series","title":"Foster 210-17, 1\/4\" ARO Plug x 3\/8\" Hose ID, 210 Series, Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. 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Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529362956335,"sku":"FOST 210-2803S\/S (1)","price":50.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210-2903-210-series","title":"Foster 210-2903, 1\/4\" ARO Coupler x 1\/8\" Male NPT, 210 Series, Automatic, Brass and Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. 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Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529362989103,"sku":"FOST 210-2903 (1)","price":15.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210-2903s-s-210-series","title":"Foster 210-2903S\/S, 1\/4\" ARO Coupler x 1\/8\" Male NPT, 210 Series, Automatic, 303 Stainless Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. The Foster \u003cstrong\u003e210-2903S\/S\u003c\/strong\u003e is a 303 stainless steel 1\/4\" coupler from the Foster 210 Series, rated to 300 PSI and built in the USA for shop air, tools, and pneumatic service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 210 Series (ARO 210 Interchange)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 210-2903S\/S\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" ARO 210\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Coupler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 1\/8\" Male NPT, MPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e Automatic push-to-connect (retract sleeve to disconnect)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 303 Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40F to +250F (Buna seal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this coupler\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic push-to-connect\u003c\/strong\u003e — which means single-handed connection; just push the plug in. 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The Foster \u003cstrong\u003e210-3003\u003c\/strong\u003e is a brass and steel 1\/4\" coupler from the Foster 210 Series, rated to 300 PSI and built in the USA for shop air, tools, and pneumatic service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 210 Series (ARO 210 Interchange)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 210-3003\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" ARO 210\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Coupler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 1\/4\" Female NPT, FPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e Automatic push-to-connect (retract sleeve to disconnect)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Brass and Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40F to +250F (Buna seal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this coupler\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic push-to-connect\u003c\/strong\u003e — which means single-handed connection; just push the plug in. Retract the sleeve to disconnect.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eARO 210 interchange\u003c\/strong\u003e — which means it mates with industry-standard ARO 210-style 1\/4\" air fittings.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt interchanges with ARO 210 Series plugs — a widely used 1\/4\" air-coupler style.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure is it rated for?\u003c\/strong\u003e\u003cbr\u003eRated to 300 PSI working pressure, -40F to +250F with Buna seals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it connect?\u003c\/strong\u003e\u003cbr\u003ePush the plug in to connect automatically; retract the sleeve to disconnect.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and air service. Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529363054639,"sku":"FOST 210-3003 (1)","price":12.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210-3003s-s-210-series","title":"Foster 210-3003S\/S, 1\/4\" ARO Coupler x 1\/4\" Female NPT, 210 Series, Automatic, 303 Stainless Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. The Foster \u003cstrong\u003e210-3003S\/S\u003c\/strong\u003e is a 303 stainless steel 1\/4\" coupler from the Foster 210 Series, rated to 300 PSI and built in the USA for shop air, tools, and pneumatic service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 210 Series (ARO 210 Interchange)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 210-3003S\/S\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" ARO 210\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Coupler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 1\/4\" Female NPT, FPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e Automatic push-to-connect (retract sleeve to disconnect)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 303 Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40F to +250F (Buna seal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this coupler\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic push-to-connect\u003c\/strong\u003e — which means single-handed connection; just push the plug in. Retract the sleeve to disconnect.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eARO 210 interchange\u003c\/strong\u003e — which means it mates with industry-standard ARO 210-style 1\/4\" air fittings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e303 stainless construction\u003c\/strong\u003e — which means strong corrosion resistance for washdown and harsh environments.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt interchanges with ARO 210 Series plugs — a widely used 1\/4\" air-coupler style.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure is it rated for?\u003c\/strong\u003e\u003cbr\u003eRated to 300 PSI working pressure, -40F to +250F with Buna seals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it connect?\u003c\/strong\u003e\u003cbr\u003ePush the plug in to connect automatically; retract the sleeve to disconnect.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and air service. Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529363087407,"sku":"FOST 210-3003S\/S (1)","price":37.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210-3103-210-series","title":"Foster 210-3103, 1\/4\" ARO Coupler x 1\/4\" Male NPT, 210 Series, Automatic, Brass and Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. The Foster \u003cstrong\u003e210-3103\u003c\/strong\u003e is a brass and steel 1\/4\" coupler from the Foster 210 Series, rated to 300 PSI and built in the USA for shop air, tools, and pneumatic service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 210 Series (ARO 210 Interchange)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 210-3103\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" ARO 210\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Coupler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 1\/4\" Male NPT, MPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e Automatic push-to-connect (retract sleeve to disconnect)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Brass and Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40F to +250F (Buna seal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this coupler\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic push-to-connect\u003c\/strong\u003e — which means single-handed connection; just push the plug in. Retract the sleeve to disconnect.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eARO 210 interchange\u003c\/strong\u003e — which means it mates with industry-standard ARO 210-style 1\/4\" air fittings.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt interchanges with ARO 210 Series plugs — a widely used 1\/4\" air-coupler style.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure is it rated for?\u003c\/strong\u003e\u003cbr\u003eRated to 300 PSI working pressure, -40F to +250F with Buna seals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it connect?\u003c\/strong\u003e\u003cbr\u003ePush the plug in to connect automatically; retract the sleeve to disconnect.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and air service. Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529363120175,"sku":"FOST 210-3103 (1)","price":13.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210-3103s-s-210-series","title":"Foster 210-3103S\/S, 1\/4\" ARO Coupler x 1\/4\" Male NPT, 210 Series, Automatic, 303 Stainless Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. The Foster \u003cstrong\u003e210-3103S\/S\u003c\/strong\u003e is a 303 stainless steel 1\/4\" coupler from the Foster 210 Series, rated to 300 PSI and built in the USA for shop air, tools, and pneumatic service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 210 Series (ARO 210 Interchange)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 210-3103S\/S\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" ARO 210\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Coupler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 1\/4\" Male NPT, MPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e Automatic push-to-connect (retract sleeve to disconnect)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 303 Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40F to +250F (Buna seal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this coupler\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic push-to-connect\u003c\/strong\u003e — which means single-handed connection; just push the plug in. Retract the sleeve to disconnect.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eARO 210 interchange\u003c\/strong\u003e — which means it mates with industry-standard ARO 210-style 1\/4\" air fittings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e303 stainless construction\u003c\/strong\u003e — which means strong corrosion resistance for washdown and harsh environments.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt interchanges with ARO 210 Series plugs — a widely used 1\/4\" air-coupler style.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure is it rated for?\u003c\/strong\u003e\u003cbr\u003eRated to 300 PSI working pressure, -40F to +250F with Buna seals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it connect?\u003c\/strong\u003e\u003cbr\u003ePush the plug in to connect automatically; retract the sleeve to disconnect.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and air service. Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529363152943,"sku":"FOST 210-3103S\/S (1)","price":38.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210-3203-210-series","title":"Foster 210-3203, 1\/4\" ARO Coupler x 3\/8\" Female NPT, 210 Series, Automatic, Brass and Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. 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Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529363513391,"sku":"FOST 210-3303 (1)","price":13.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210-3303s-s-210-series","title":"Foster 210-3303S\/S, 1\/4\" ARO Coupler x 3\/8\" Male NPT, 210 Series, Automatic, 303 Stainless Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. 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Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529364037679,"sku":"FOST 210-3303S\/S (1)","price":53.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210-3603-210-series","title":"Foster 210-3603, 1\/4\" ARO Coupler x 1\/4\" Hose ID, 210 Series, Automatic, Brass and Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. 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Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529364201519,"sku":"FOST 210-3603 (1)","price":13.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210-3603s-s-210-series","title":"Foster 210-3603S\/S, 1\/4\" ARO Coupler x 1\/4\" Hose ID, 210 Series, Automatic, 303 Stainless Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. The Foster \u003cstrong\u003e210-3603S\/S\u003c\/strong\u003e is a 303 stainless steel 1\/4\" coupler from the Foster 210 Series, rated to 300 PSI and built in the USA for shop air, tools, and pneumatic service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 210 Series (ARO 210 Interchange)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 210-3603S\/S\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" ARO 210\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Coupler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 1\/4\" Hose ID\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e Automatic push-to-connect (retract sleeve to disconnect)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 303 Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40F to +250F (Buna seal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this coupler\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic push-to-connect\u003c\/strong\u003e — which means single-handed connection; just push the plug in. Retract the sleeve to disconnect.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eARO 210 interchange\u003c\/strong\u003e — which means it mates with industry-standard ARO 210-style 1\/4\" air fittings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e303 stainless construction\u003c\/strong\u003e — which means strong corrosion resistance for washdown and harsh environments.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt interchanges with ARO 210 Series plugs — a widely used 1\/4\" air-coupler style.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure is it rated for?\u003c\/strong\u003e\u003cbr\u003eRated to 300 PSI working pressure, -40F to +250F with Buna seals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it connect?\u003c\/strong\u003e\u003cbr\u003ePush the plug in to connect automatically; retract the sleeve to disconnect.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and air service. Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529364234287,"sku":"FOST 210-3603S\/S (1)","price":53.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210-3653-210-series","title":"Foster 210-3653, 1\/4\" ARO Coupler x 1\/4\" Hose ID, 210 Series, Automatic, Brass and Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. 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Retract the sleeve to disconnect.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eARO 210 interchange\u003c\/strong\u003e — which means it mates with industry-standard ARO 210-style 1\/4\" air fittings.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt interchanges with ARO 210 Series plugs — a widely used 1\/4\" air-coupler style.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure is it rated for?\u003c\/strong\u003e\u003cbr\u003eRated to 300 PSI working pressure, -40F to +250F with Buna seals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it connect?\u003c\/strong\u003e\u003cbr\u003ePush the plug in to connect automatically; retract the sleeve to disconnect.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and air service. Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529364267055,"sku":"FOST 210-3653 (1)","price":14.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210-3703-210-series","title":"Foster 210-3703, 1\/4\" ARO Coupler x 3\/8\" Hose ID, 210 Series, Automatic, Brass and Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. 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Retract the sleeve to disconnect.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eARO 210 interchange\u003c\/strong\u003e — which means it mates with industry-standard ARO 210-style 1\/4\" air fittings.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt interchanges with ARO 210 Series plugs — a widely used 1\/4\" air-coupler style.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure is it rated for?\u003c\/strong\u003e\u003cbr\u003eRated to 300 PSI working pressure, -40F to +250F with Buna seals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it connect?\u003c\/strong\u003e\u003cbr\u003ePush the plug in to connect automatically; retract the sleeve to disconnect.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and air service. Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529364332591,"sku":"FOST 210-3703 (1)","price":13.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210-3703s-s-210-series","title":"Foster 210-3703S\/S, 1\/4\" ARO Coupler x 3\/8\" Hose ID, 210 Series, Automatic, 303 Stainless Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. The Foster \u003cstrong\u003e210-3703S\/S\u003c\/strong\u003e is a 303 stainless steel 1\/4\" coupler from the Foster 210 Series, rated to 300 PSI and built in the USA for shop air, tools, and pneumatic service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 210 Series (ARO 210 Interchange)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 210-3703S\/S\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" ARO 210\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Coupler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 3\/8\" Hose ID\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e Automatic push-to-connect (retract sleeve to disconnect)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 303 Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40F to +250F (Buna seal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this coupler\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic push-to-connect\u003c\/strong\u003e — which means single-handed connection; just push the plug in. Retract the sleeve to disconnect.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eARO 210 interchange\u003c\/strong\u003e — which means it mates with industry-standard ARO 210-style 1\/4\" air fittings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e303 stainless construction\u003c\/strong\u003e — which means strong corrosion resistance for washdown and harsh environments.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt interchanges with ARO 210 Series plugs — a widely used 1\/4\" air-coupler style.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure is it rated for?\u003c\/strong\u003e\u003cbr\u003eRated to 300 PSI working pressure, -40F to +250F with Buna seals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it connect?\u003c\/strong\u003e\u003cbr\u003ePush the plug in to connect automatically; retract the sleeve to disconnect.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and air service. Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529364365359,"sku":"FOST 210-3703S\/S (1)","price":54.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210-51-210-series","title":"Foster 210-51, 1\/4\" ARO Plug x 1\/4\" Push-On Hose Stem, 210 Series, Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. The Foster \u003cstrong\u003e210-51\u003c\/strong\u003e is a steel 1\/4\" plug from the Foster 210 Series, rated to 300 PSI and built in the USA for shop air, tools, and pneumatic service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 210 Series (ARO 210 Interchange)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 210-51\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" ARO 210\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 1\/4\" Push-On Hose Stem\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40F to +250F (Buna seal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this plug\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eARO 210 interchange\u003c\/strong\u003e — which means it plugs into any matching ARO 210-style 1\/4\" socket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteel\u003c\/strong\u003e — which means durable service under repeated high-pressure cycling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePush-on hose stem\u003c\/strong\u003e — secure grip on push-on hose, no clamp required.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt interchanges with ARO 210 Series sockets — a widely used 1\/4\" air-coupler style.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure is it rated for?\u003c\/strong\u003e\u003cbr\u003eRated to 300 PSI working pressure, -40F to +250F with Buna seals.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and air service. Pair this plug with a matching 1\/4\" ARO 210 socket for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529364398127,"sku":"FOST 210-51 (1)","price":4.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210m-2803-210-series","title":"Foster 210M-2803, 1\/4\" ARO Coupler x 1\/8\" Female NPT, 210 Series, Manual, Brass and Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. 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Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529364758575,"sku":"FOST 210M-2803 (1)","price":16.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210m-2803np-210-series","title":"Foster 210M-2803NP, 1\/4\" ARO Coupler x 1\/8\" Female NPT, 210 Series, Manual, Nickel-Plated Brass\/Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. 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Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529364791343,"sku":"FOST 210M-2803NP (1)","price":25.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210m-2903-210-series","title":"Foster 210M-2903, 1\/4\" ARO Coupler x 1\/8\" Male NPT, 210 Series, Manual, Brass and Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. The Foster \u003cstrong\u003e210M-2903\u003c\/strong\u003e is a brass and steel 1\/4\" coupler from the Foster 210 Series, rated to 300 PSI and built in the USA for shop air, tools, and pneumatic service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 210 Series (ARO 210 Interchange)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 210M-2903\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" ARO 210\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Coupler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 1\/8\" Male NPT, MPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e Manual sleeve (retract to connect and disconnect)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Brass and Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40F to +250F (Buna seal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this coupler\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual sleeve operation\u003c\/strong\u003e — which means a positive, deliberate connect\/disconnect by retracting the socket sleeve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eARO 210 interchange\u003c\/strong\u003e — which means it mates with industry-standard ARO 210-style 1\/4\" air fittings.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt interchanges with ARO 210 Series plugs — a widely used 1\/4\" air-coupler style.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure is it rated for?\u003c\/strong\u003e\u003cbr\u003eRated to 300 PSI working pressure, -40F to +250F with Buna seals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it connect?\u003c\/strong\u003e\u003cbr\u003eRetract the socket sleeve to connect and to disconnect (manual operation).\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and air service. Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529364824111,"sku":"FOST 210M-2903 (1)","price":14.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210m-2903np-210-series","title":"Foster 210M-2903NP, 1\/4\" ARO Coupler x 1\/8\" Male NPT, 210 Series, Manual, Nickel-Plated Brass\/Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. The Foster \u003cstrong\u003e210M-2903NP\u003c\/strong\u003e is a nickel-plated brass\/steel 1\/4\" coupler from the Foster 210 Series, rated to 300 PSI and built in the USA for shop air, tools, and pneumatic service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 210 Series (ARO 210 Interchange)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 210M-2903NP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" ARO 210\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Coupler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 1\/8\" Male NPT, MPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e Manual sleeve (retract to connect and disconnect)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Nickel-Plated Brass\/Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40F to +250F (Buna seal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this coupler\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual sleeve operation\u003c\/strong\u003e — which means a positive, deliberate connect\/disconnect by retracting the socket sleeve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eARO 210 interchange\u003c\/strong\u003e — which means it mates with industry-standard ARO 210-style 1\/4\" air fittings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNickel-plated finish\u003c\/strong\u003e — which means added corrosion resistance and a clean appearance.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt interchanges with ARO 210 Series plugs — a widely used 1\/4\" air-coupler style.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure is it rated for?\u003c\/strong\u003e\u003cbr\u003eRated to 300 PSI working pressure, -40F to +250F with Buna seals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it connect?\u003c\/strong\u003e\u003cbr\u003eRetract the socket sleeve to connect and to disconnect (manual operation).\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and air service. Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529365053487,"sku":"FOST 210M-2903NP (1)","price":26.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210m-2903s-s-210-series","title":"Foster 210M-2903S\/S, 1\/4\" ARO Coupler x 1\/8\" Male NPT, 210 Series, Manual, 303 Stainless Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. 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Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529365086255,"sku":"FOST 210M-2903S\/S (1)","price":42.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210m-3003-210-series","title":"Foster 210M-3003, 1\/4\" ARO Coupler x 1\/4\" Female NPT, 210 Series, Manual, Brass and Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. 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Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529365119023,"sku":"FOST 210M-3003 (1)","price":12.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210m-3003np-210-series","title":"Foster 210M-3003NP, 1\/4\" ARO Coupler x 1\/4\" Female NPT, 210 Series, Manual, Nickel-Plated Brass\/Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. The Foster \u003cstrong\u003e210M-3003NP\u003c\/strong\u003e is a nickel-plated brass\/steel 1\/4\" coupler from the Foster 210 Series, rated to 300 PSI and built in the USA for shop air, tools, and pneumatic service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 210 Series (ARO 210 Interchange)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 210M-3003NP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" ARO 210\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Coupler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 1\/4\" Female NPT, FPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e Manual sleeve (retract to connect and disconnect)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Nickel-Plated Brass\/Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40F to +250F (Buna seal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this coupler\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual sleeve operation\u003c\/strong\u003e — which means a positive, deliberate connect\/disconnect by retracting the socket sleeve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eARO 210 interchange\u003c\/strong\u003e — which means it mates with industry-standard ARO 210-style 1\/4\" air fittings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNickel-plated finish\u003c\/strong\u003e — which means added corrosion resistance and a clean appearance.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt interchanges with ARO 210 Series plugs — a widely used 1\/4\" air-coupler style.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure is it rated for?\u003c\/strong\u003e\u003cbr\u003eRated to 300 PSI working pressure, -40F to +250F with Buna seals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it connect?\u003c\/strong\u003e\u003cbr\u003eRetract the socket sleeve to connect and to disconnect (manual operation).\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and air service. Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529365184559,"sku":"FOST 210M-3003NP (1)","price":26.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210m-3003s-s-210-series","title":"Foster 210M-3003S\/S, 1\/4\" ARO Coupler x 1\/4\" Female NPT, 210 Series, Manual, 303 Stainless Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. The Foster \u003cstrong\u003e210M-3003S\/S\u003c\/strong\u003e is a 303 stainless steel 1\/4\" coupler from the Foster 210 Series, rated to 300 PSI and built in the USA for shop air, tools, and pneumatic service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 210 Series (ARO 210 Interchange)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 210M-3003S\/S\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" ARO 210\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Coupler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 1\/4\" Female NPT, FPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e Manual sleeve (retract to connect and disconnect)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 303 Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40F to +250F (Buna seal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this coupler\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual sleeve operation\u003c\/strong\u003e — which means a positive, deliberate connect\/disconnect by retracting the socket sleeve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eARO 210 interchange\u003c\/strong\u003e — which means it mates with industry-standard ARO 210-style 1\/4\" air fittings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e303 stainless construction\u003c\/strong\u003e — which means strong corrosion resistance for washdown and harsh environments.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt interchanges with ARO 210 Series plugs — a widely used 1\/4\" air-coupler style.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure is it rated for?\u003c\/strong\u003e\u003cbr\u003eRated to 300 PSI working pressure, -40F to +250F with Buna seals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it connect?\u003c\/strong\u003e\u003cbr\u003eRetract the socket sleeve to connect and to disconnect (manual operation).\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and air service. Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529365217327,"sku":"FOST 210M-3003S\/S (1)","price":35.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210m-3103-210-series","title":"Foster 210M-3103, 1\/4\" ARO Coupler x 1\/4\" Male NPT, 210 Series, Manual, Brass and Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. 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Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529365250095,"sku":"FOST 210M-3103 (1)","price":12.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210m-3103np-210-series","title":"Foster 210M-3103NP, 1\/4\" ARO Coupler x 1\/4\" Male NPT, 210 Series, Manual, Nickel-Plated Brass\/Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. The Foster \u003cstrong\u003e210M-3103NP\u003c\/strong\u003e is a nickel-plated brass\/steel 1\/4\" coupler from the Foster 210 Series, rated to 300 PSI and built in the USA for shop air, tools, and pneumatic service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 210 Series (ARO 210 Interchange)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 210M-3103NP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" ARO 210\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Coupler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 1\/4\" Male NPT, MPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e Manual sleeve (retract to connect and disconnect)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Nickel-Plated Brass\/Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40F to +250F (Buna seal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this coupler\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual sleeve operation\u003c\/strong\u003e — which means a positive, deliberate connect\/disconnect by retracting the socket sleeve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eARO 210 interchange\u003c\/strong\u003e — which means it mates with industry-standard ARO 210-style 1\/4\" air fittings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNickel-plated finish\u003c\/strong\u003e — which means added corrosion resistance and a clean appearance.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt interchanges with ARO 210 Series plugs — a widely used 1\/4\" air-coupler style.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure is it rated for?\u003c\/strong\u003e\u003cbr\u003eRated to 300 PSI working pressure, -40F to +250F with Buna seals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it connect?\u003c\/strong\u003e\u003cbr\u003eRetract the socket sleeve to connect and to disconnect (manual operation).\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and air service. Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529365282863,"sku":"FOST 210M-3103NP (1)","price":22.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210m-3103s-s-210-series","title":"Foster 210M-3103S\/S, 1\/4\" ARO Coupler x 1\/4\" Male NPT, 210 Series, Manual, 303 Stainless Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. 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Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529365315631,"sku":"FOST 210M-3103S\/S (1)","price":36.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210m-3203-210-series","title":"Foster 210M-3203, 1\/4\" ARO Coupler x 3\/8\" Female NPT, 210 Series, Manual, Brass and Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. The Foster \u003cstrong\u003e210M-3203\u003c\/strong\u003e is a brass and steel 1\/4\" coupler from the Foster 210 Series, rated to 300 PSI and built in the USA for shop air, tools, and pneumatic service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 210 Series (ARO 210 Interchange)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 210M-3203\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" ARO 210\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Coupler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 3\/8\" Female NPT, FPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e Manual sleeve (retract to connect and disconnect)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Brass and Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40F to +250F (Buna seal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this coupler\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual sleeve operation\u003c\/strong\u003e — which means a positive, deliberate connect\/disconnect by retracting the socket sleeve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eARO 210 interchange\u003c\/strong\u003e — which means it mates with industry-standard ARO 210-style 1\/4\" air fittings.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt interchanges with ARO 210 Series plugs — a widely used 1\/4\" air-coupler style.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure is it rated for?\u003c\/strong\u003e\u003cbr\u003eRated to 300 PSI working pressure, -40F to +250F with Buna seals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it connect?\u003c\/strong\u003e\u003cbr\u003eRetract the socket sleeve to connect and to disconnect (manual operation).\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and air service. Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529365348399,"sku":"FOST 210M-3203 (1)","price":20.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210m-3203s-s-210-series","title":"Foster 210M-3203S\/S, 1\/4\" ARO Coupler x 3\/8\" Female NPT, 210 Series, Manual, 303 Stainless Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. 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Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529365610543,"sku":"FOST 210M-3203S\/S (1)","price":42.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210m-3303-210-series","title":"Foster 210M-3303, 1\/4\" ARO Coupler x 3\/8\" Male NPT, 210 Series, Manual, Brass and Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. 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Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529365643311,"sku":"FOST 210M-3303 (1)","price":18.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210m-3303s-s-210-series","title":"Foster 210M-3303S\/S, 1\/4\" ARO Coupler x 3\/8\" Male NPT, 210 Series, Manual, 303 Stainless Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. The Foster \u003cstrong\u003e210M-3303S\/S\u003c\/strong\u003e is a 303 stainless steel 1\/4\" coupler from the Foster 210 Series, rated to 300 PSI and built in the USA for shop air, tools, and pneumatic service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 210 Series (ARO 210 Interchange)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 210M-3303S\/S\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" ARO 210\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Coupler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 3\/8\" Male NPT, MPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e Manual sleeve (retract to connect and disconnect)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 303 Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40F to +250F (Buna seal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this coupler\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual sleeve operation\u003c\/strong\u003e — which means a positive, deliberate connect\/disconnect by retracting the socket sleeve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eARO 210 interchange\u003c\/strong\u003e — which means it mates with industry-standard ARO 210-style 1\/4\" air fittings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e303 stainless construction\u003c\/strong\u003e — which means strong corrosion resistance for washdown and harsh environments.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt interchanges with ARO 210 Series plugs — a widely used 1\/4\" air-coupler style.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure is it rated for?\u003c\/strong\u003e\u003cbr\u003eRated to 300 PSI working pressure, -40F to +250F with Buna seals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it connect?\u003c\/strong\u003e\u003cbr\u003eRetract the socket sleeve to connect and to disconnect (manual operation).\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and air service. Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529365676079,"sku":"FOST 210M-3303S\/S (1)","price":42.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210m-3603-210-series","title":"Foster 210M-3603, 1\/4\" ARO Coupler x 1\/4\" Hose ID, 210 Series, Manual, Brass and Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. The Foster \u003cstrong\u003e210M-3603\u003c\/strong\u003e is a brass and steel 1\/4\" coupler from the Foster 210 Series, rated to 300 PSI and built in the USA for shop air, tools, and pneumatic service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 210 Series (ARO 210 Interchange)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 210M-3603\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" ARO 210\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Coupler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 1\/4\" Hose ID\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e Manual sleeve (retract to connect and disconnect)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Brass and Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40F to +250F (Buna seal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this coupler\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual sleeve operation\u003c\/strong\u003e — which means a positive, deliberate connect\/disconnect by retracting the socket sleeve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eARO 210 interchange\u003c\/strong\u003e — which means it mates with industry-standard ARO 210-style 1\/4\" air fittings.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt interchanges with ARO 210 Series plugs — a widely used 1\/4\" air-coupler style.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure is it rated for?\u003c\/strong\u003e\u003cbr\u003eRated to 300 PSI working pressure, -40F to +250F with Buna seals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it connect?\u003c\/strong\u003e\u003cbr\u003eRetract the socket sleeve to connect and to disconnect (manual operation).\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and air service. Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529365741615,"sku":"FOST 210M-3603 (1)","price":13.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210m-3603np-210-series","title":"Foster 210M-3603NP, 1\/4\" ARO Coupler x 1\/4\" Hose ID, 210 Series, Manual, Nickel-Plated Brass\/Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. The Foster \u003cstrong\u003e210M-3603NP\u003c\/strong\u003e is a nickel-plated brass\/steel 1\/4\" coupler from the Foster 210 Series, rated to 300 PSI and built in the USA for shop air, tools, and pneumatic service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 210 Series (ARO 210 Interchange)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 210M-3603NP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" ARO 210\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Coupler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 1\/4\" Hose ID\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e Manual sleeve (retract to connect and disconnect)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Nickel-Plated Brass\/Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40F to +250F (Buna seal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this coupler\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual sleeve operation\u003c\/strong\u003e — which means a positive, deliberate connect\/disconnect by retracting the socket sleeve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eARO 210 interchange\u003c\/strong\u003e — which means it mates with industry-standard ARO 210-style 1\/4\" air fittings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNickel-plated finish\u003c\/strong\u003e — which means added corrosion resistance and a clean appearance.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt interchanges with ARO 210 Series plugs — a widely used 1\/4\" air-coupler style.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure is it rated for?\u003c\/strong\u003e\u003cbr\u003eRated to 300 PSI working pressure, -40F to +250F with Buna seals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it connect?\u003c\/strong\u003e\u003cbr\u003eRetract the socket sleeve to connect and to disconnect (manual operation).\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and air service. Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529365774383,"sku":"FOST 210M-3603NP (1)","price":23.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210m-3603s-s-210-series","title":"Foster 210M-3603S\/S, 1\/4\" ARO Coupler x 1\/4\" Hose ID, 210 Series, Manual, 303 Stainless Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. The Foster \u003cstrong\u003e210M-3603S\/S\u003c\/strong\u003e is a 303 stainless steel 1\/4\" coupler from the Foster 210 Series, rated to 300 PSI and built in the USA for shop air, tools, and pneumatic service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 210 Series (ARO 210 Interchange)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 210M-3603S\/S\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" ARO 210\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Coupler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 1\/4\" Hose ID\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e Manual sleeve (retract to connect and disconnect)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 303 Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40F to +250F (Buna seal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this coupler\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual sleeve operation\u003c\/strong\u003e — which means a positive, deliberate connect\/disconnect by retracting the socket sleeve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eARO 210 interchange\u003c\/strong\u003e — which means it mates with industry-standard ARO 210-style 1\/4\" air fittings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e303 stainless construction\u003c\/strong\u003e — which means strong corrosion resistance for washdown and harsh environments.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt interchanges with ARO 210 Series plugs — a widely used 1\/4\" air-coupler style.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure is it rated for?\u003c\/strong\u003e\u003cbr\u003eRated to 300 PSI working pressure, -40F to +250F with Buna seals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it connect?\u003c\/strong\u003e\u003cbr\u003eRetract the socket sleeve to connect and to disconnect (manual operation).\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and air service. Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529365807151,"sku":"FOST 210M-3603S\/S (1)","price":53.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210m-3653s-s-210-series","title":"Foster 210M-3653S\/S, 1\/4\" ARO Coupler x 1\/4\" Hose ID, 210 Series, Manual, 303 Stainless Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. The Foster \u003cstrong\u003e210M-3653S\/S\u003c\/strong\u003e is a 303 stainless steel 1\/4\" coupler from the Foster 210 Series, rated to 300 PSI and built in the USA for shop air, tools, and pneumatic service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 210 Series (ARO 210 Interchange)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 210M-3653S\/S\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" ARO 210\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Coupler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 1\/4\" Hose ID\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e Manual sleeve (retract to connect and disconnect)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 303 Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40F to +250F (Buna seal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this coupler\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual sleeve operation\u003c\/strong\u003e — which means a positive, deliberate connect\/disconnect by retracting the socket sleeve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eARO 210 interchange\u003c\/strong\u003e — which means it mates with industry-standard ARO 210-style 1\/4\" air fittings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e303 stainless construction\u003c\/strong\u003e — which means strong corrosion resistance for washdown and harsh environments.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt interchanges with ARO 210 Series plugs — a widely used 1\/4\" air-coupler style.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure is it rated for?\u003c\/strong\u003e\u003cbr\u003eRated to 300 PSI working pressure, -40F to +250F with Buna seals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it connect?\u003c\/strong\u003e\u003cbr\u003eRetract the socket sleeve to connect and to disconnect (manual operation).\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and air service. Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529366134831,"sku":"FOST 210M-3653S\/S (1)","price":60.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210m-3703-210-series","title":"Foster 210M-3703, 1\/4\" ARO Coupler x 3\/8\" Hose ID, 210 Series, Manual, Brass and Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. The Foster \u003cstrong\u003e210M-3703\u003c\/strong\u003e is a brass and steel 1\/4\" coupler from the Foster 210 Series, rated to 300 PSI and built in the USA for shop air, tools, and pneumatic service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 210 Series (ARO 210 Interchange)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 210M-3703\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" ARO 210\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Coupler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 3\/8\" Hose ID\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e Manual sleeve (retract to connect and disconnect)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Brass and Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40F to +250F (Buna seal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this coupler\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual sleeve operation\u003c\/strong\u003e — which means a positive, deliberate connect\/disconnect by retracting the socket sleeve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eARO 210 interchange\u003c\/strong\u003e — which means it mates with industry-standard ARO 210-style 1\/4\" air fittings.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt interchanges with ARO 210 Series plugs — a widely used 1\/4\" air-coupler style.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure is it rated for?\u003c\/strong\u003e\u003cbr\u003eRated to 300 PSI working pressure, -40F to +250F with Buna seals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it connect?\u003c\/strong\u003e\u003cbr\u003eRetract the socket sleeve to connect and to disconnect (manual operation).\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and air service. Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529366167599,"sku":"FOST 210M-3703 (1)","price":19.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"},{"product_id":"foster-210-sb3-210-series","title":"Foster 210-SB3, 1\/4\" ARO Coupler x Reusable Hose Clamp Fitting, 210 Series, Automatic, Brass and Steel","description":"\u003cp\u003eReliable 1\/4\" air connections that interchange with ARO 210 Series couplers and plugs. The Foster \u003cstrong\u003e210-SB3\u003c\/strong\u003e is a brass and steel 1\/4\" coupler from the Foster 210 Series, rated to 300 PSI and built in the USA for shop air, tools, and pneumatic service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 210 Series (ARO 210 Interchange)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 210-SB3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" ARO 210\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Coupler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e Reusable Hose Clamp Fitting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e Automatic push-to-connect (retract sleeve to disconnect)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Brass and Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40F to +250F (Buna seal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this coupler\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic push-to-connect\u003c\/strong\u003e — which means single-handed connection; just push the plug in. Retract the sleeve to disconnect.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eARO 210 interchange\u003c\/strong\u003e — which means it mates with industry-standard ARO 210-style 1\/4\" air fittings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReusable hose clamp fitting\u003c\/strong\u003e — which means you can re-clamp onto fresh hose instead of scrapping a crimped fitting.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt interchanges with ARO 210 Series plugs — a widely used 1\/4\" air-coupler style.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure is it rated for?\u003c\/strong\u003e\u003cbr\u003eRated to 300 PSI working pressure, -40F to +250F with Buna seals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it connect?\u003c\/strong\u003e\u003cbr\u003ePush the plug in to connect automatically; retract the sleeve to disconnect.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and air service. Pair this coupler with a matching 1\/4\" ARO 210 plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality, responsive US-based support, accurate specs, fast shipping.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":45529366396975,"sku":"FOST 210-SB3 (1)","price":17.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/Foster_Stock_Image_v1.png?v=1781220743"}],"url":"https:\/\/www.hpcouplers.com\/collections\/foster-210-series-couplers.oembed?page=3","provider":"hpcouplers","version":"1.0","type":"link"}