Keyless is - The bicycle combination U-lock adopts a unique keyless design, which saves you the pressure of carrying keys. You 't need a key here. Heavy-duty U-Lock What you have is a 4-digit resettable combo bike lock that offers 10,000 possible combination combinations. You can easily set or reset the password of to make the lock harder to crack. Make your motorcycle, electric scooter, gate is safe Adjustable shackle lock- upgraded version of 4-position combination lock, U-shaped adjustable shackle, can be fully pulled out.Accommodates glass doors and bicycles. Detachable shackle for flexible unlocking and locking. Bike Lock Heavy Duty Anti-theft Hardened Zinc Alloy Shackle can resist knife bolt and lever attacks. The PC rubber overlay helps protect your bike from scratches and lock wear. It is also perfect for locking , , skateboards, gates, fences, lawn mowers, generators, sports equipment, and more. Multi-scene application-U-lock combination set is not only suitable for bicycles, but also for motorcycles, glass doors, gates, sheds, fences. The entire lock combination set is very convenient to use and carry on many occasions. Material: zinc alloy +pc Color: Black Package Contents: 1 x bicycle lock Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.