★★ Ultra-Thick and Heavy Duty Chain. 0.36 inch-Diameter Ultra-Thick Chain made of 3T manganese steel, strong and tough, much safer than most of other chain lock in the market. Bike chain lock dimensions: 3ft (90cm) long, 9mm (0.36 inch) thick hardened steel chain links. Weight: 2.87lbs (1.3Kg)

★★ Waterproof & Dirt-proof Cap. The dust cover can protect your keyhole from rain and dust. High security lock cylinder is pick and drill resistant.

★★Durable weather-resistant nylon sleeve prevents the chain lock from scratching and rusting. You can just wrap the heavy duty bike lock on your bike frame or just put it into your backpack.

★★ The lock cylinder of this bike chain lock is made by pure copper blade, which has a precise structure for anti-theft protection. Comes with 3 pure copper keys, bent and twist resistant, you’ll always have a spare one.

★★Widely application, the heavy duty bike idea for motorcycle, bicycle, sport equipment, scooter, gates, fences, grills, etc. 100 days warranty applies to the bike lock chain, 90-day money back policy.