Flexible thanks to the chain lock. The Steel-O-Chain™ 5805K chain lock is particularly suitable for cyclists who often ride in areas with a low risk of theft. Especially when you frequently lock your bike in different locations, a flexible chain lock is highly recommended. The clear advantage of the 5 mm thick square chain made of special steel in the Steel-O-Chain™ 5805K is its flexibility. This provides many options for securely locking the bike to various objects. Well-suited options include firmly anchored bike racks or lamp posts, as long as the bike does not obstruct anyone.