Kryptonite's (and hence probably the world's) ultimate U-lock. Originally developed to protect 5-grand motor cycles. 18mm through-hardened Kryptonium Steel shackle resists bolt cutters and leverage attacks. High security disc style cylinder. Hardened steel sleeve over crossbar for double security. Double deadbolt locking design for extensive holding power. Centre keyway defends against leverage attacks. 3 keys - one with a light for night time use. Vinyl coating helps protect lock and bike from scuffing. 10 cm x 26cm.