... huizheng.netDetailed Description Name:Friction stay, window hinge,friction hinge,window hardware,four bar hinge,hinge,window accessory,window fitting,handleMaterial:SS304# ... with 8% nickel,SS301# with 5% nickel, SS202# ,430#,iron.Groove form ... a plastic,100 pcs in a carton. friction stay hinge,window hardware,heavy duty hinge