【Extra-long Chain Lock】 This bicycle lock has a chain length of 3.6 feet and a total length of 3.94 feet (including the lock head), allowing it to protect multiple bicycles simultaneously. The bike lock easily secures the bicycle to railings or other desired locations. 【High Security】 This motorcycle lock features a 6mm hardened steel chain and a reinforced lock head, providing high resistance against cutting and cutting tools. Compared to other lightweight chain lock, it significantly enhances theft protection capabilities. 【Rainproof and Scratch-resistant】 The lock head of this bicycle chain lock is equipped with a waterproof keyhole, preventing rainwater from entering the lock. The outer protective layer is made of high-quality nylon fabric, providing UV resistance and extending the lifespan of the bike lock while also preventing scratches on the bicycle. The heavy duty bike lock comes with two keys to prevent key loss. 【Versatile Application】 Our chain bike lock is suitable for adults and older children, making it ideal for motorcycles, bicycles, scooters, strollers, wheelchairs, lawnmowers, and more. 【Quality Customer Service】 Customer satisfaction is our service goal, and if you encounter any issues within 6 months, feel free to contact us. We will be happy to assist you and provide unconditional replacements or refunds. RIDWIND Bike Chain Lock, 3.94Feet Bike Locks Heavy Duty Anti Theft, 6mm Bike Lock Chain with 2 Keys, Motorcycle Locks Anti Theft, Waterproof Lock Chain for Bicycle, Motorcycle, Scooter, Door, Gate