Kryptonite Kryptolok Combo U-LockTHE LOCK U NEEDTheft is a sad reality in the bike world and it only takes a few seconds for your bike to disappear if left unattended. You'll want to keep your bike locked up at all times when it's unattended. The Kryptonite Kryptolok Combo U-Lock has a 12mm hardened high-grade carbon allow steel shackle that resists hand tools. It features a 4-digit resettable combination and a high-security Bent Foot Design for ease of use. The anti-rattle bumpers reduce noise during transport and it includes a side mount and snap-in bracket.Features12mm hardened high-grade carbon allow steel shackle resists hand tools4-digit combo that is easily resettableAnti-rattle bumpers reduce noise during transportSpecificationsShackle Length8"U-Lock Diameter12mmShackle Width4"Cable IncludedNoLock StyleComboSecurity Rating6/10Weight2.30 LBS | Kryptonite Kryptolok Combo U-Lock 4" X 8", W/ Bracket