• 【Hhigher Security Chain 】NDakter's motorcycle u lock heavy duty anti theft, comes with 4FT safty chain, a 0.98in-1.37in diameter mount bracket and 3 keys. No need to memorize the code，comes with 3 keys that can be shared with family and friends, very convenient，and this motorcycle tire lock set is made of alloy steel, 4FT chain is 0.23 inch thick, anti-theft, cut-proof, provided a higher level of security for bicycles.
• 【Upgraded & Larged Size】Electric scooter U lock upgraded and enlarged size, more locking space: 6.29in×4.12 in, can go through most of the bike frames and poles. Equipped with 47.2 inch length chain, the bike chain is long enough to lock 2/3/4 bikes together around a pole, and solve the anti-theft problem of multiple bikes at the same time. The motorcycle chain has two rectangular steel rings at both ends that can be passed through each other for more locking methods.
• 【Heavy Duty Anti Theft 】The heavy duty bike lock is made of hardened steel, which makes it weigh up to 3.74lb, can provide stronger anti-theft protection. The large U-shaped shank is 0.6 inch thick and the chain is 0.23 inch thick with heat and hydraulic shear resistance. And the chain is made of 3T manganese steel, has a higher security level.
• 【Precision locking cylinders & 3 Keys】The lock core is made of zinc alloy，has a precise structure to prevent technical opening. The key is made of brass，very strong and durable. In addition, the key-hole is very smooth, put the key in the top of the keyhole, can be easily opened. Comes with 3 keys to ensure you have a backup at all times.
• 【Easy to Use & Scratch】This electric bike d-lock set is very easy to use and comes with a 0.8inch diameter bracket for 0.98in-1.37in diameter tubing, making it easy to install and remove without additional tools. The motorcycle chain is wrapped in nylon protective cover and the U-lock outer protective sleeve is silicone, which can prevent the surface of the bike from being scratched, it can be used outdoors without worrying about the weather, it is suitable for motorcycle, motorbike, ebike , electric scooter, moped, trike, e-tribike, electric- tricycle, 3- wheel-bike, mtb-bike, bmx-bike, mountain road bike.