... 4.Spring in stainless steel and pins in brass Brass Door Lock Cylinder Material: Brass, Zinc Alloy, Iron, Al, etc.Length: 40 ... Key : iron key or brass key ( 3pcs /set , 5pcs /set ) Lock core: brass or zinc Sealed bead: brass and iron ( we can ... Surface finishing :Gold plated, chrome plated,nickel plated, polished brass,satin nickel, satin chrome, antique bronze platedantique copper platedPcs/ ...