High-Quality Material: This rotary combination lock is made of zinc alloy, which is strong, precise, and secure. Corrosion-resistant and rust-free, it can be used for a long time. Password Setting: The original password for the combination lock is 000. You can change the password yourself. Without installing screws, you can directly install the lock on the chassis and use it. When changing the password, press and hold the password hole. Easy to Use: This secure mechanical lock is suitable for cabinets of various thicknesses. You no longer need to carry a key; just turn the code to unlock and close. Beautiful Appearance: The surface of the combination cam lock is very smooth, the appearance is beautiful, and the design is simple, compact, and practical, which is very much in line with the modern style. Wide Range of Uses: Can be used in filing cabinets, mailboxes, drawers, lockers, shoe cabinets, wooden cabinets, metal cabinets, etc. A lock to close all types of sheet metal doors, ideal for workshops. 1. Lock body material: zinc alloy 2. Surface treatment: chrome 3. Lock body diameter: 19mm; 4. Thread length: 20mm; 5. Suitable for 1~2.3cm sheet metal thickness. 6. Factory code is: 000 7. How to change the password: Under the lock, there is a hole for changing the password. In the open position, use a small pin to crown this hole, do not release it, then change the password, release your hand when you are done, the password change is complete. Scramble the code after locking. 8. Scope of application: password mailbox lock, wardrobe lock, shoe cabinet lock, staff room lock, cabinet lock