1. nickel satinalloy 2.aluminum 3. Sub-mother Door Hinge ProductBoth Zinc alloy and aluminium alloy are available.Finish: Satin Nickel/Polish Gold, Black/Gold, Satin Nickel Material: Zinc alloy door lock (zinc alloy door lock, lock handle) Door thickness: 38~70mmFunction: ET,BK,PS,DL,Deadbolt.Fashion appearance, high quality and durable for use.Characteristics* Guaranteed for over 100,000 life ...