Kryptonite Keeper 785 Integrated Chain Lock Ensure your bikes safety when you aren't looking with the new Keeper 785 Integrated Chain Lock. Made from 7mm-thick hardened 3T manganese steel, the Keeper Lock is a heavy-duty chain lock that is finished off with a protective nylon sleeve. A hardened deadbolt design makes for a super-tough construction and the deadbolt has an anti-rotation feature to resist twisting. The Kryptonite Keeper 785 Integrated Chain Lock has a 33. 5-inch length and weighs in at 3. 5 pounds. To top it off, this chain lock comes in a variety of colors to match with your bike. Features 7mm, four-sided chain links made from 3t manganese steel Hardened deadbolt design with anti-rotation resist against twist High security disc-style cylinder is pick and drill resistant Two ergonomic "I" keys Weather-resistant nylon sleeve prevents scratches33. 5" chain length Weight: 3. 5 lbs Lifetime warranty | Kryptonite | Krypto Keeper 785 Integrated Chain Lock Black | Nylon