The Kryptonite Keeper 12 STD U-Lock with 4' Flex Cable offers robust security for your bike and accessories. Featuring a 12mm hardened steel shackle and a double deadbolt design, this Kryptonite bike lock resists twisting and cutting for maximum protection. The included 4-foot flex cable secures additional components like wheels, while the disc-style cylinder and anti-rotation technology enhance durability. With two stainless steel keys and a click-style transportation bracket, the Kryptonite Keeper 12 STD U-Lock is a reliable choice for urban cyclists.