STOP THIEVES IN THEIR TRACKS ABUS is well-known for its consistently high quality and security. With this bike lock, you can count on high-quality materials. Even if you think your bike is well-protected against theft, for example because you have left it in a cellar or a monitored area, you are still taking a risk. Thieves use every opportunity they can get. As a combination lock, the Steel-O-Chain™ 4804C Chain Lock offers ideal protection for entry-level bikes and children's bikes where there is a low risk of theft.