Chicago coupling (universal coupling, claw coupling) US type hose end Casting method of our Chicago coupling: >> Investment casting,Sand casting Symetrical coupling parts: >> hose end .gasket Chicago coupling material: >> Carbon Steel, Malleable iron Chicago coupling sizes: >> 1/4" to 2" We mainly supply camlock couplings (cam & groove quick couplings), guillemin coupling, TW coupling, Bauer type coupling, chicago coupling, Ground joint coupling, sandblast coupling, King combination nipple, DIN2817 safety clamp, T-bolt superior clamp, double bolt clamp, whipcheck safety cable, washdown gun, etc.