STURDY: This bike u lock is made of 0.63inch(including 0.1inch PVC cover) carbon structural steel which is cutting-resistant, leveraging-resistant. The PVC cover makes u lock can resist corrosion from dust and dirt to prolong the life of your bike lock.

NO BLOCKING: The lock cylinder of u lock is made by zinc alloy blade, which has a precise structure to prevent technical opening. With the lock dust cover and cooper lock cylinder, no need to worry about blocking when opening the bicycle lock.

PORTABLE: The size of the u lock is 8.3*5.7inch. Comes with a mounting bracket that is suitable for all circular tripod in diameter ≤1.18inch. With the portable size, you can put this bike u lock into your bag or mount it on the frame of your bike.

EASY INSTALLATION: The mounting bracket holder is easy to install, you can refer to our instructions to install it. This convenient installation enables you to store your bike lock quickly when on a ride. Enjoy your beautiful day like never before!

3 KEYS: The bike lock comes with 3 keys which are specially designed. This keys of the bicycle u lock makes duplication difficult and can prevent technology unlocking as it has complex serpentine slot. It’s safer for your beloved bikes.