The hose screw sleeve can make by carbon steel,aluminum,brass etc.We can make all produce ... various sleeve with high quality and reasonable price.1) Hose screw sleeve,engine sleeve,sliding sleeve,straight thread sleeve, ... ferrule ect,2) Material:Zinc ally,Penter,Aluminum,Stainless steel,Iron,Brass,Plastic ect.3) Color Pantne color chart ... kinds of productions on base of your drawings Hose screw sleeve