Feature: 1. Wide application: U lock with long shackle, widely used in elongated glass doors, motorcycles, bicycle storage cabinets, etc. 2. Durable Construction: The lock body is made of high quality zinc alloy, waterproof, rust resistant and high tensile strength for maximum durability. 3. Steel shackle: The solid steel lock beam is strong and durable, greatly improving safety. Diameter of lock beam approx. 14mm/0.55in. 4. Anti-theft design: The mechanical password can effectively prevent rapid cracking, and the tab hook design is safe and not easy to unlock by violence. 5. Security Padlock: Set your own 4-digit passcode and protect your belongings. The lock fits most latches. Specification: Item Type: U Lock Material: Zinc Alloy + Steel Purpose: Security Locks Color: Black Lock Mechanism: Password Lock Password: 4 Digits Lock Beam Diameter: Approx. 14mm/0.55in Features: Lock Hook Design Package List: 1 xU Lock