1. nickel satinalloy 2.aluminum 3. Sub-mother Door Hinge ProductBoth Zinc alloy and aluminium alloy are available.Finish: ... , Black/Gold, Satin Nickel Material: Zinc alloy door lock (zinc alloy door lock, lock handle) Door thickness: 38~70mmFunction: ET,BK,PS,DL ... for left or right hand doors. Lock and Hinge for door & Window