... Coupling 1.Universal Crowfoot Couplings 2.size:1/4",3/8",1/2',3/4",1",1-1/4',1-1 ... Thread End, Femaile Thread End5,Sizes Available:1/4", 3/8", 1/2", 3/4", 1" ,1 1/4",1 1 ... ,Working Pressure: 150 PSI.7,Range of Working Temperature: +/- 40°c.8,Applications: For Air and Water Only.9,Warning: Never Use ...