... Iron, Nylon Size:3/4", 1-1/4", 1-1/2" Sandblast CouplingTypes:Female adaptor-threadedMaterial:Aluninum, Brass, Cast Iron, NylonSize ... :3/4", 1-1/4", 1-1/2",We mainly supply camlock couplings (cam & groove quick couplings), guillemin coupling, Bauer type coupling ...