The Abus Ultra 410 U-Lock w/ Cobra Cable pairs a U-lock--arguably the most secure design--with a cable lock for the ultimate combination of security, flexibility, and versatility. The U-lock is made from 12mm hardened steel for protection against cutting and twist attacks, while its decoy cuttings help prevent lock pickings. The key and cylinder interface is exceptionally easy to use, and the Cobra Cable's flexible, lengthy design adds an extra layer of security whether on its own or with the U-lock.