Kryptonite Messenger Mini Heavy Duty Bicycle U Lock Bike Lock, 3.75 x 6.5-Inch 11mm hardenedMAX-PERFORMANCE STEEL SHACKLEprovides a lighter weight lock with the same security as the EV Mini 5, 7, or 9 HIGH SECURITY DISC-STYLE CYLINDER Increased shackle dimensions allow for flexibility with lock-up ReinforcedCUFF OVER CROSS BARand cylinder for added security BENT FOOTSHACKLEdesign for ease of use Center keyway defends against leverage attacks 2 STAINLESS STEEL KEYSwith coiled wrist key chains Key Safe Program Product dimensions: 3.75 x 6.5 (9.5cm x 16.5cm) Product weight: 1.83 lbs (.83 kgs) 11mm hardened MAX-Performance steel shackle provides a lighter weight lock with the same security as the EV Mini 5, 7, or 9 Increased shackle dimensions allow for flexibility with lock-up Reinforced cuff over crossbar and cylinder for added security High security, DuoCore cylinder Bent Foot shackle design for ease of use Center keyway defends against leverage attacks 2 stainless steel keys with coiled wrist key chains Key Safe Program