Master Lock Street Cuffsreg; provide an original and secure urban look, they provide the best protection for your equipment, and are compact, making them easy to carry. Their hardened steel construction and patented cylinder guarantee an excellent level of security. The cuffs require no keys to lock the cylinder, meaning the process is quick and easy. All Master Lock bike locks with locking mechanism have a Lifetime Warranty against mechanical failure. Length: 36cm.Diameter of Cuff: 74mm.Number of Keys: 4.Weight: 1.40kg.