After biking downtown to meet friends for dinner, make sure you lock your bike up with the Kryptonite KryptoLok STD U-Lock-Double Deadbolt for some much-needed peace of mind. With a high-grade hardened Max-Performance steel construction, this lock's shackle resists hand tools with force, while the double deadbolt design gives additional protection against twist and leverage attacks. The high-security disc cylinder is pick and drill resistant, and the reinforced hardened CrossBar deters thieves through its impenetrable design. Then, the protective vinyl coating helps save your frame from scratches, while the FlexFrame-U bracket offers convenient transport in multiple locations.