Our factory exterior lock that this section is 304 stainless steel exterior lock, size 120mmX85mm, lock: copper, latch, knob. Handle: zinc alloy, cylinder, lock shell, internal fittings are of iron plating and into.Carton is a universal subjects of common small carton Scott and foam packaging.Lock shell thickness of our common 0.8-1.0mm,.Surface Treatment: polished.A box with 24 and 30 installed.