Kryptonite KryptoLok U Lock features a 12.7mm hardened Performance Steel Shackle designed to resist cutting and leverage attacks. The new patent-pending Hardened Double Deadbolt Design enhances the lock's resistance to twist attacks, offering increased security. The High Security Disc-Style Cylinder ensures the lock is both pick and drill resistant, providing a high level of protection against theft. Kryptonite KryptoLok U Lock comes with two Stainless Steel Keys, which are ergonomically designed to minimize torque and prevent bending or breaking. Additionally, a 4-foot Kryptoflex Double Looped Cable is included, perfect for securing the front wheel or accessories, adding an extra layer of security. A new Dust Cover is part of the design, protecting the keyhole from dirt and debris, while the FlexFrame-U Bracket allows for convenient transport and multiple locking locations, enhancing the usability of the lock. The protective vinyl coating on the shackle guards against scratches to your bike or scooter. With the Key Safe Program, users can easily replace lost or stolen keys, adding an additional layer of convenience and security. The lock measures 4 inches by 9 inches (10.2cm x 22.9cm) and weighs 3.65 lbs (1.66 kgs), offering a robust yet manageable security solution. This combination of features makes the lock a versatile and reliable choice for securing bicycles and other valuable items in a variety of settings.