1.2m cable included (Duo model only 320mm). Use the U-lock to "lock" the bike to a fixed object (e.g. Oxford anchor, fence, lamp post, etc.) to prevent it from being ridden or pushed away. The cable can be used to secure the component parts such as wheels.
Dimensions
LK426: 14mm? shackle, 320(h) x 155(w)mm (+ 12?mm x 1.2m cable)