... Products Pictures : Specifications : Product TypeHigh-quality Hardware PartsMaterialsteel alloy, brass, copper, aluminum , Stainless steel, iron , white brass , aluminium, Steel ,Zinc etc ... .Machining methodlathe turning, cnc turning, milling, threading, etcSurface finishPolishing , chrome, nickel plating, zinc plating, anodization, power coating , aluminum oxide , brushing ...