Kryptonite Evolution Mini-5 Heavy Duty Bicycle U Lock Bike Lock 13mm hardenedMAX-PERFORMANCE STEEL SHACKLEresists bolt cutters and leverage attacks ReinforcedCUFF OVER CROSSBARand cylinder for added security HIGH SECURITY DISC-STYLE CYLINDER BENT FOOTSHACKLEdesign for ease of use Center keyway defends against leverage attacks ANTI-RATTLE BUMPERSreduce noise during transport ROTATING DUSTCOVERprotects cylinder IncludesNEW TRANSIT FLEXFRAME-Utransportation system which allows for versatile carrying Protective vinyl coating 3 STAINLESS STEEL KEYS one lighted with high intensityLED BULB 7 REPLACEABLE BATTERY 13mm hardened MAX-Performance steel shackle resists bolt cutters and leverage attacks Reinforced cuff over crossbar and cylinder for added security High security, disc-style cylinder Bent Foot shackle design for ease of use Center keyway defends against leverage attacks Anti-rattle bumpers reduce noise during transport Rotating dustcover protects cylinder Includes new Transit FlexFrame-U transportation system which allows for versatile carrying Protective vinyl coating 3 stainless steel keys  one lighted with high intensity LED bulb & replaceable battery