Maximum Security The DX D-lock has double anti-rotation locking and a 14mm premium hardened steel shackle to withstand the toughest of attacks. Awarded Gold Level Security by the independent testing house Sold Secure.   Speed-Loading Bracket The unique design of the DXF’s speed-loading frame bracket uses our patented “CLIP+RIDE” system to attach the lock to the bracket for a steady, rattle-free hold while riding.   Easy Fit The DXF bracket fits easily on to the bottle holder mounts on seat tube or down tube. With the fixings included, all you need is a screwdriver to attach the bracket to your bike frame in minutes.   Features Maximum security u lock. Unique speed-loading frame bracket. Double dead lock. Anti-rotation locking. 3 x coded replaceable keys. Weight: 1160g.