door lock parts material: brass, AL, iron, zinc alloy different surface finished length from 40-120mm Door lock partsMaterial: Brass, Zinc Alloy, Iron, Al, etc.Length: 40-120mmDoor lock partsCam : sintered steel ( very hardened ) Key : iron key or brass key ( 3pcs /set , 5pcs /set ) Lock core: brass or zinc Sealed bead: brass and iron ( we can do 5 or 6 pcs hoodles by customers' requirement) Knob ...