Premium Aluminum Alloy Material: Our red anodized air hose fitting set is made of high quality aluminum alloy material, which is more than standard stainless steel and brass fittings. The coupler is designed with six locking balls for fixing and locking the plug, making the connection reliable and to withstand the high pressure of pneumatic tools and equipment without leaking. Maximum pressure is 300 PSI Automatic Push-to-Connect Design: The universal quick coupler adopts a fully automatic push to connect plug connection design. It can operate plug coupling at any time due to the coupler sleeve is in the downward position. These air couplers accept all 3 common standardized plug types: Industrial (), Automotive (T), and (A). Widely Uses: Our air fitting kit is suitable for a variety of applications including car repair shops, body shops, construction sites, homes and garages. Attach fittings to air hoses, air compressors, and pneumatic air tools such as , grinders, tools, tools, impact wrenches, inflatable accessories, and more. Product Name:Air Coupler and Plug Kit Size:1/4 inch diameter interface Plug Standard: US Color:Red Material:Aluminium Package Contents: 16 x Air Hose Fitting Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.