Firm locking strength The U-lock shackle has undergone several heat treatment processes to increase hardness and strength, making it resistant to destruction, cutting and violent attempts. Dustproof cover The locking mechanism features a flip cover design that protects against dust and sand and prevents rain from soaking the mechanism, helping to extend the life of the lock. 4 digit combination and anti-theft cylinder This U-lock uses a 4 digit combination for keyless operation and includes a high quality anti-theft cylinder to prevent thieves from using a universal key to pick the lock. Bracket not included. What this means for you - Keyless convenience: no keys to lose, quick to set and reset your code. - Strong protection: hardened shackle and anti-pick cylinder deter common theft methods. - Weather resistant design: dustproof cover helps extend the lock’s lifespan in outdoor use. Use scenarios - City bike security: lock your bicycle to a rack or post in busy urban areas while you run errands. - Parking at transit hubs: secure a bike or scooter in university campuses, train stations, or shopping centers during travel or work. - Outdoor equipment protection: when leaving equipment unattended in public spaces, use the 4-digit combination for quick, reliable access control. Bracket not included Note that the mounting bracket is not included with this lock.