●Humanized Design The product includes a lock and a storage bag, the surface of the bike bag is waterproof, scratch resistant and wear-resistant. There is a keyhole inside, the internal mesh pocket is layered and the bag has a large capacity, which can not only store the handcuff lock, but also carry some daily necessities. ●Anti Scratch Design Soft silicone around the cuff of the lock can form a protective layer, which effectively prevents the handcuff lock from scratching the scooter, and increases friction and non-slip, easy to grip, while improving the safety of the lock. ●HIGH MATERIAL The roller lock is made of full alloy steel, which is cut resistant, hammer proof, shear resistant and anti-theft. Provides higher safety for your outdoor electric scooter. ●Unique Appearance: Double Ring Lock. With a handcuff look, it is easier to install on fence posts than traditional bike locks and comes with 3 keys so you can install it on your electric scooter quickly and easily. ●LONGER AND THICKER CHAIN: By using a roller chain similar to a motorcycle chain, it is thicker and stronger than a traditional round link chain. The total length including the lock is 36.2 inches/92 cm and the length of the chain part is 23.6 inches/60 cm.