Lock body material: zinc alloy Surface treatment: chrome plating, electrophoretic black, matte plating, titanium plating Lock body diameter: M19 mm Thread length: 20mm (short); 30mm (long) Applicable plate thickness: 1-15mm; suitable for plate thickness up to 23mm Factory default password: 000 How to change the password: There is a reset hole at the bottom of the lock. In the open position, use a small tool to press and hold the reset pin inside the hole, then set your desired 3-digit combination. Release the pin to complete the change. Always scramble the dials after locking to secure the lock. Application: Suitable for mailboxes, lockers, shoe cabinets, staff cabinets, wooden cabinets, and similar storage units User guide: The factory-set password is 000. For first-time use, align the dials to 000. Hold the lock body (grasp the threaded section by the flat sides) with one hand, and rotate the lock face (the beveled side with grooves) 90 degrees clockwise or counterclockwise with the other hand. Slight force may be needed initially; operation becomes smoother with use. Keyless Security: This 3-digit combination cam lock is easy to install and can upgrade standard cam lock applications. It can be set to a non-resettable mode. Durable Construction: Made from heavy-duty zinc alloy for long-lasting performance, resistant to rust and wear Note: To change the password, use a small tool to press the hole at the back of the lock while setting a new combination. Remember your new password, then release the tool to lock in the new code. Color: Silver Quantity: 2 pieces