Kryptonite Krypto Lok U-Lock U Can't Touch This This is the easy choice for a U-lock with moderate security. It's great for quick stops in the city or longer stops in the suburbs, and a double deadbolt design stands up to cut and twist attacks. Features12. 7mm hardened steel shackle, resists cutting and leverage Double deadbolt with anti-rotation, resists twist attacks High-security disc cylinder, pick and drill resistant with a sliding dust cover Flex Frame-U bracket included, mounts in multiple spots on your bike Security rating 6 of 10, includes two stainless steel keys SPECIFICATIONSSize4" x 9" (10. 2 x 22. 9 cm)Weight1. 32 kg (2. 9 lb) | Kryptonite | Kryptolok U-Lock 4 X 11. 5 Keyed | Black | Includes Bracket