1.Material/ door lock:zinc alloy 2.Lock heart:American style brass plug, zinc alloy case with 3brass computer keys. 1.Material/ door lock:zinc alloy2 ... .Lock heart:American style brass plug, zinc alloy case with ... *T2.1mm,NW-2.2kg,GW-2.7kg4.Lock body: Above-stanless steel door closer. Under-70mm zinc alloy dead bolt,stainless ...