This unique lock combines near U-lock security with the ease of use and versatility of a cable lock. Remarkably compact the K-9 series is constructed of hardened steel plates and keyed lock features OnGuard’s pick, pull and drill proof Z-Cylinder. Once unfolded, the K-9 has the length to secure frames and wheels to a rack or other solid object. Includes mounting bracket mounts to most bicycle tubes for easy transport.