Male Coupling 1.Universal Crowfoot Couplings 2.size:1/4",3/8",1/2',3/4",1",1-1/4',1-1/2". 3,Material:Carbon Steel (Zinc Plat ... universal air Coupling We are ... End, Femaile Thread End5,Sizes Available:1/4", 3/8", 1/2", 3/4", 1" ,1 1/4",1 1/2",2"6,Working Pressure: 150 ...