With 3 digits design, this mechanical combination lock allows you to set the password you want to set also easy to remember. Besides, it is designed with a thickened base, which has a strong load-bearing capacity and is very stable and reliable. Adopting polishing process, this mechanical combination lock has good anti-rust and corrosion resistance, which can be used for a long time. Also, with its good anti-theft performance, it can well protect your privacy and is very safe. It is constructed of zinc alloy material. There are 5 colors for your reference. This combination lock is suitable for drawers or envelope boxes with a board thickness of within 18mm. Item Name: Password Lock Material: Zinc Alloy Features: High Hardness, Polishing Process, Easy Installation Initial password: 0000 Opening: 19mm Fitted Board Thickness: 18mm within Size Details: Chassis: 4cm x 4cm/1.57" x 1.57" (Approx.) Round Lock External Diameter: 3.7cm/1.46" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Password Lock 6 x Screw 1 x Locking Plate