Kryptonite New York Chain 1217 and Evolution Disc Lock A Hardened Steel Chain A chain lock is a good combination of protection and flexibility so you can easily take it along with you while you're riding. The Kryptonite New York Chain 1217 and Evolution Disc Lock features an oval cross disc lock and 6-sided 3T hardened Manganese steel links and is designed to defeat maximum attacks. The hardened double deadbolt design protects against twist attacks and the 14mm hardened Max-Performance steel shackle keeps your frame protected. This lock comes with three stainless steel keys and has a security rating of 9 out of 10. Features Hardened double deadbolt design protects against twist attacks Includes three stainless steel keys including two standard "I" keys and one LED lighted key14mm hardened Max-Performance steel shackle makes it hard to cut Specifications Cable Length5. 5'Cable Diameter14mm Lock Style Keyed Security Rating9 out of 10Weight13. 15 lbs | Kryptonite | New York Chain 1217 And Evolution Disc Lock 5. 5' (170Cm)