carfrill Bike Chain Locks Heavy Duty Bicycle Lock with 2 Keys, Anti-Theft Waterproof Cycle Lock

Double Protection Design- Adopts a waterproof nylon protective cover design, the bike chain locks with key is not only protects the chain from rust and corrosion, but also protects the chain from scratching the body, keeping the lock and the bicycle are in good condition. High-quality Material? Made of high-strength manganese steel, the bicycle chain lock is super solid and steady, resistant to cutting and lever attacks, ensuring your bicycle safety. In addition, the lock cylinder adopts a copper crescent lock cylinder, which has high hardness, strong anti-theft, and safer to use. Sturdy Keys? Bike chain lock come with 2 keys. It is made of pure high-quality copper, which will not damage the lock cylinder. You can take one of the keys to use in daily life, for another key you can leave it at home in case accidentally lose on. Wide Applications? This bicycle lock is 40 inches/102 cm long, which is long enough to lock almost bike also ideal for locking motorcycles, scooters, farm, fence, sports equipment, fences, grills, ladders etc.