Aluminum couplings Type: Hose end and female adapter Material:Aluninum,Cast ... , Nylon Size:3/4", 1-1/4", 1-1/2" Aluminum couplings Types:Hose end and female adapter Material:Aluninum, Brass ... -1/2", We mainly supply camlock couplings (cam & groove quick couplings), guillemin coupling, Bauer type coupling, Ground joint coupling, sandblast coupling, King combination nipple, DIN2817 ...