... Keys: Normal or computer keys or others can choose A54MM zinc alloy cylinder lock1-Single Side Open Cylinder Lock2-Shape: ... 60mm, 70mm, 80mm, 90mm6-Material: Brass, Aluminium, Zinc Alloy 7-Inside Core: Brass, Zinc Alloy 8-Inside Pins: Brass Pins or Iron Pins9 ... So onHigh quality guarantee Lock cylinder; Brass, zinc alloy, aluminium material are optional; Allcolor can be available, like PB, AB, AC, ...