male connector: 1,material:ss304,ss316,brass,copper 2,size:1/8"-1" 3,OEM order are ... ferrule, back ferrule, ontology and tubes. Material: stainless steel (SUS), brass (B), carbon steel (CB). And rigorous quality control, so quality ... use special tools.Our strength:1. Stainless steel, carbon steel, brass fittings are available,2. Strict quality control norms followed at ...