... 3,Material:Carbon Steel (Zinc Plat universal air Coupling We are Fuzhou Hongxing Machinery Co., Ltd. in ... cam & groove quick couplings), guillemin coupling, Bauer type coupling, chicago coupling, Ground joint coupling, sandblast coupling, King combination nipple, DIN2817 safety ... locking pins.1,Universal Crowfoot Air Hose Coupling Type Available:EuropeanType,US Type2,Material: Carbon Steel (Zinc ...