Combination Bike Lock: This is a U-lock for bicycles with a 15mm solid thickened shackle. Very robust and durable. The inside is a zinc alloy lock shackle and the outside is covered with environmentally friendly PVC. 1.1 kg multi-functional anti-theft lock for bicycles, door locks. Equipped with an extended steel cable to increase the locking area. 4-Digit Password Setting: No keys needed, you no longer have to worry about being unlocked. 10,000 types of password arrangements, difficult to crack. Can effectively prevent your bike or other belongings from being stolen. (Initial password: 0000) After setting the password, please keep your password properly in case you forget it and cannot unlock it. Large Locking Space: This U-lock comes with a 1.2m steel cable. When used together, they can be locked in a wider area. It can be locked to objects such as utility poles or trees. Can lock bicycles, electric bikes, scooters, motorcycles, gates, etc. Robust Alloy U-Lock: Both the U-shaped lock body and the steel cable are made of very strong alloy. Cannot be cut and damaged, not easy to rust, rainproof and corrosion-resistant. Wide Range of Applications: With a 1.2m steel cable, it can be widely used for bicycle/electric bike/motorcycle/door/grill, etc. It can be locked to poles, trees or fences. Simple, convenient and quick to use.