For the ultimate protection against bike theft, Kryptonite fashioned the New York STD U-Lock with bracket. This traditional U-lock design has been revamped with a new construction, as well as a double dead-bolt style lock to ensure your bike remains safe. Now you won't turn your back only to have your bike stolen in a New York minute. The U-lock itself utilizes a 16mm hardened MAX-Performance steel shackle that is able to resist bolt cutters as well as pressure from leverage. In addition, the cross bar is covered with a steel sleeve for a second measure of security. The lock is a double deadbolt system and the cylinder is a high security disc-style with a center key opening, which also helps to inhibit leverage attacks. The entire lock has been given a protective vinyl coating, and the cylinder features a sliding dust cover. These protect both the lock as well as the paint job on your bike. A TransitFlex Frame system is included, which gives you versatile carrying options. Three stainless steel keys are included, and one includes a high-intensity bulb built in so that you're able to easily locate the keyhole, even in the dark. If you register your key, you'll have access to Kryptonite's Key Safe Program, which allows you to get a new key if you lose yours. The Kryptonite New York STD U-Lock with Bracket measures about 4 x 8in and weights 4. 35 pounds.