For peace of mind when securing your bicycle, use the Abus Ultra 410 U-Lock/Cable Combo. Included is both a sturdy U-lock as well as a steel cable which work together for easy bicycle locking. The Abus Ultra 410 U-Lock is constructed of hardened steel with a 12mm diameter shackle for strength. The U-lock utilizes a key for locking/unlocking with a key cylinder designed to deter picking. Also included is the Abus Cobra cable which is a 10mm diameter/120cm long steel cable with a protective synthetic coating. Loop the cable through your bike, around the bike rack, and then secure the looped ends with the U-lock. U-lock features 12mm diameter, hardened steel shackle U-lock's case and supporting elements also constructed of hardened steel U-lock key cylinder provides high protection against manipulations, such as picking U-lock height: 9"/21cm 10mm diameter/120cm length steel cable with two loop ends Cable features synthetic coating to prevent damage to paint Made in Germany