Diyife 18mm Combination Bike U Lock, Large Bike Lock Heavy Duty Anti Theft — Open-Box, 15% Off

【Keyless Convenience & Security】Enjoy hassle-free protection with our 4-digit resettable combination u bike lock, eliminating lost or damaged keys. Offers 10,000 possible combinations for enhanced security. If you forget your combination, two included keys help recover it (keys cannot unlock). Features an adjustable bracket for 6.5in diameter bike tubes or smaller, ensuring easy carry during rides and reliable bicycle lock security anywhere.

【Robust Heavy duty Anti-Theft】Built for maximum theft deterrence, the bike U-lock and steel cable total weighs 3.36 lbs (U-lock alone weighing: 2.4 lbs). Its 0.7in thick U-bar and 0.47in thick steel cable deliver superior resistance to cutting and sawing. A 0.04-inch PVC coating adds waterproof and anti-rust protection while preventing scratches to your bike’s frame and paint.

【Extended Locking Space】With an internal space of 7.87″ x 4.72″ and external dimensions of 10.24″ x 7.1″, this lock accommodates larger items. The 5FT steel cable secures 2-4 bicycles simultaneously—ideal for families or groups. And easily threads through bike frames, posts, wheels, helmets, and more.

【Simple Setup & Operation】To reset your combination, first unlock the lock using the default code ‘0000’. Then press the ‘RESET’ button fully inward until it protrudes from the opposite side. Turn the dial to set a new password. Finally, push the protruding part back into place to complete the setup. If you forget your combination, you can retrieve it by inserting the included key and turning it 90° to the right, then rotating the dial upwards until it cannot be turned any further. Note: always recover your current password before attempting to reset it.

【Wide Applications】For versatile security, the U-lock can be used independently or together with the steel cable, depending on your needs. It‘s perfect for bicycles, e-bikes, e-scooters, and motorcycles in high-theft areas such as campuses, parking lots, and garages. Also great for securing lawn mowers, gates, grills, ladders, toolboxes, and other valuables. Make sure to check the size to ensure a perfect fit.

The Diyife 18mm Combination Bike U Lock – featuring a 0.7‑inch (18mm) thick hardened steel shackle and a 0.47‑inch steel cable, this heavy‑duty anti‑theft set delivers superior cutting and sawing resistance. The total weight of 3.36 lbs (U‑lock alone 2.4 lbs) speaks to its solid build, while the 0.04‑inch PVC coating provides waterproof, anti‑rust protection and prevents scratches on your bike frame. Enjoy keyless convenience with a 4‑digit resettable combination – offering 10,000 possible codes for personalized security. If you ever forget your code, the two included keys (for recovery only, not for unlocking) help you retrieve it quickly. The lock’s internal space of 7.87″ x 4.72″ and external dimensions of 10.24″ x 7.1″ accommodate larger frames, and the 5ft steel cable allows you to secure 2‑4 bicycles at once – perfect for groups or families. You can also thread the cable through wheels, posts, helmets, and more. An adjustable mounting bracket fits bike tubes up to 6.5 inches in diameter, making it easy to carry during rides. Use the U‑lock alone or together with the cable for versatile security – ideal for bicycles, e‑bikes, scooters, motorcycles, lawn mowers, gates, toolboxes, and other valuables in high‑theft areas. Please check your handlebar or frame size before purchase to ensure a perfect fit.