ss 304/316 quick coupling connector 1.size:1/8"-4" 2.material:304/316/316L ... are the manufacture of ss pipe fittings ss 304/316 quick coupling connector1.we are the manufacture of stainless steel products ... fittings such as elbow,tee,union,bushing,nipple,cap,etc. .Quick couplings such as Type A,B,C,D,E,F ...