Kryptonite New York Chain with Evolution Series 4 Disc Lock - 5ft. - 6in. Chain 999522Durable, protective nylon cover with hook n loop fasteners to hold it in place New York Disc Lockfeatures 15mm hardened MAXPerformance steel shackle and higher security disc style cylinder Patented, hardened oval crossbar design is stronger than a typical round tube Hardened double deadbolt design provides additional protection against twist attacks Includes 3 keys: 2, I keys and one with a high intensity L. E. D. bulb for convenient, easy unlocking