OnGuard 8014 Bulldog Mini 3.5" x 9.5" Key U-Lock

9.46 x 3.55 13mm Ultra-hardened steel shackle resists bolt cutters and leverage attacks Reinforced cuff over crossbar and cylinder for added security Improved high security, disc-style lock cyclinder NEW IMPROVED X2P DOUBLE BOLT LOCK MECHANISM (locks both sides, no more weaker bent foot design!) Center keyway defends against leverage attacks Anti-rattle bumpers reduce noise during transport Includes versatile EZ Mount bracket for transportation 5 PICK RESISTANT keys - one lighted with high intensity bulb and replaceable battery $501 Anti-theft Protection (check onguardlock.com for details)