... choose A54MM zinc alloy cylinder lock1-Single Side Open Cylinder Lock2-Shape: Mortise Door ... 60mm, 70mm, 80mm, 90mm6-Material: Brass, Aluminium, Zinc Alloy 7-Inside Core: Brass, Zinc ... or Iron Key 11-Open: Double Side Open or Single Side Open 12-Surface Finished: Cp, Np ... , Gp, Ab, AC and So onHigh quality guarantee Lock cylinder; Brass, zinc alloy, aluminium ...