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