Zinc alloy material: High-strength zinc alloy body, zinc alloy lock hook, 8mm anti-pry lock ring, cannot be manually removed or forcibly opened, can effectively prevent shearing and prying. Metal digital code disc, no fading, durable. Hidden password and 4-digit combination: The encryption device of this black encryption lock is hidden at the bottom of the lock, which is not easy to find. At the same time, the 4-digit metal encryption wheel provides 10,000 encryption combinations, which is stronger and more secure, and provides a high level of anti-theft protection. Error protection: To change the password, you must first loosen the screw, then press the setting button until you see the "SET" button, and then reset the password. This can effectively avoid the problem of being unable to open the password due to accidental password change. Unique Features: The surface of the lock has a non-slip texture, providing a comfortable feel. Size: 102mm x 51.5mm x 24mm, compact and easy to