Kryptonite New York Cinch Ring Chain 1275 Lock Maximum Security It doesn't matter if you're leaving your bike for five minutes, five hours, or five seconds, you should always put a lock on your bike. For the most security, you'll want a hardened steel chain to keep your bike protected. The Kryptonite New York Cinch Ring Chain 1275 Lock features an oval crossbar disc lock and 6-sided 3T hardened Manganese steel links, designed to defeat maximum attacks. The hardened double deadbolt design gives additional protection against twist attacks. This lock includes three stainless steel keys including two standard "I" keys and one LED lighted key. Features Hardened double deadbolt design gives additional protection against twist attacks Includes three stainless steel keys including two standard "I" keys and one LED lighted key6-sided 3T hardened Manganese steel links designed to defeat maximum attacks Specifications Cable Length2. 5-feet (75cm)Cable Diameter14mm Lock Style Keyed Security Rating9 out of 10Weight6. 95 lbs | Kryptonite | New York Cinch Ring Chain 1275 Lock 2. 5' (70Cm)