Hardened steel handcuffs, for scooters and bicycles, silicone coated to protect from scratches and dings. quick and secure opening and locking of the handcuffs. a3 hardened steel chain and pins with high cut resistance. the cylinder is protected with abs plastic. there are 3 cuff diameter levels: 7,5 cm, 8 cm and 8,5 cm. includes 3 keys and ergonomic bag