Excellent anti-theft feature: inside the lock there is a tangling structure made of steel wires, which is covered with environmentally friendly PVC coating on the surface. This lock is safe, wear-resistant and rust-proof, preventing cutting. Size: 12 mm bicycle cable (diameter). The unfolded length of the lock is 1800 mm.2 keys available: the key picks up all copper blades, the anti-theft device is C and the anti-theft device is better. You can take one of the keys for daily use and leave another key at home if you accidentally lose one, or you can also duplicate 1-2 keys in locksmiths for a rainy day. Comes with a free bike mount for easy transportation.Waterproof keyhole lid and reflective strips: due to its flexibility and length of 180 cm, the lock chain offers a high level of comfort and many ways to connect bicycles with fixed objects. The light up protective cover makes it easier for you to find your own bike at night. With the waterproof dustproof cover that protects your keyhole from rain and dust.MULTI-FUNCTION LOCK: This bike lock is 180cm long, long enough and the cable lock is very versatile. It offers more practicability and is ideal for skateboards, grills, stroller lock, roller lock, generator lock, gates and fences, grills and lawnmowers and many more.High security and durable: the cable lock is fully pleasant and beautiful, the appearance is smooth, it does not scratch bicycles, motorcycles, scooters, etc. The key is easy to open, convenient and practical. The lock core is made of zinc alloy, lightweight and durable, the thief is difficult to open, you can be sure that you buy itQuantity:1set