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