Quality Assurance: Sliding Door Mortise Lock Set: Zinc alloy with silver anti-corrosion powder coating finish. Lock Cylinder: Copper. Keys: Copper. Size: Handle Size: Length 160mm, Width 45mm. Lock Body: Length 82mm, Width 57mm. (For details, please refer to the picture). Sliding Wooden Door Lock, Invisible Handle: Works on door panels with a thickness of 35-50mm. The sliding door lock fits either left or right door. Wooden Door Lock with Key: It can be bolted inside or locked outside. When bolted inside, it can be unlocked by a key from the outside.