1,Wide Application: U lock with long shackle, widely used in lengthened glass doors, motorcycles, bicycle storage cabinets, etc. 2,Durable Construction: The lock body is made of high‑quality zinc alloy material, 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. Lock beam diameter approx. 14mm/0.55in. 4,Anti Theft Design: The mechanical password can effectively prevent quick cracking, and the tongue hook design is safe and not easy to be unlocked by violence. 5,Security Padlock: Set your own 4 digit passcode and keep your possessions safe. The lock is fit most latches. Note: 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.