To lock your bike and quick-release wheels, or to lock up yours and a friend's bikes during a coffee run, the Kryptonite 785 Integrated Chain Lock is the ideal accessory. This chain lock features a patent-pending end-link design that secures the links to the hardened deadbolt, which helps to eliminate critical vulnerability. In other words, there are no weld seams in the links that are able to be pried open. Additionally, the disc-style lock cylinder is pick and drill resistant. The chain is 33. 5in long, which makes it easy to secure to a bike rack, tree, or other immovable object. It is sheathed in a weather-resistant nylon sleeve to prevent scratches on your bike. To ensure that you never have to bring in a specialist to remove the lock due to lost keys, Kryptonite's Key Safe program is available -- just register your key and you're able to get a replacement when necessary.