The LC 680 Loop chain/U-lock combination allows you to securely lock bicycles that require a large locking range. This bicycle lock can be used in two ways. First, it can be used in the "normal" way, where both ends of the chain are secured with the U-lock. Second, there is the option to thread the chain through the eyelet and create a short loop, allowing for maximum chain length. This bicycle lock has a key closure and is not ART-approved. The base color of this lock is black. Product specifications - Brand: Trelock - Primary base color: Black - Closure type: Key - ART Approval Mark: No ART approval - Length in cm: 110 - Bicycle lock type: Chain lock