<p>The USHAKE heavy-duty combination U-lock， provides the top level security protection for your bike, motorcycle and other belongings. Durable 10 or 14mm zinc alloy steel shackles resist cutting or jacking. Easy to use 4 or 5 digits resettable lock gives you convenient keyless access while allowing for various combinations.<br /> <br /> This U lock is wonderful for major metropolitan areas as well as University and College Campuses, perfect to protect your bike, motorcycle when you are away from them. No more terrible feeling of losing your belongings and anti-theft. Just set a combination of your own and thieves can do nothing with the lock.<br /> <br /> Attention: <em><strong>If the password is forgotten, it will not be opened for the lock or reset the password. Storing your combination in a secure location is highly recommended.</strong></em></p>