Kryptonite New York Chain with EV Series 4 Disc Lock

10mm, 4-sided chain made of triple heat-treated boron manganese steel for ultimate strength. Narrower inner width of individual links prevents leverage attacks. Kryptonite's weatherproof, nylon jacket allows compact coiling and protects bike surface. The EV series 4-disc lock is 14mm hardened MAX-performance steel shackle with double deadbolt locking mechanism. New oval crossbar design and a new, higher security, disc style cylinder with more than a million key variations. Reinforced anti-drill/pull cylinder protection system. Sliding dust cover protects and extends cylinder life. 3 keys included, 2 new “I” keys and 1 high intensity lighted key with replaceable battery. Anti-theft protection and key replacement program.