The Abus Shield frame lock 5755L is an excellent choice for securing your bicycle. With the option of adding a plug-in chain, you can easily lock your bicycle to fixed objects. The frame lock is equipped with an ABUS XPlus cylinder, which ensures a high level of protection against lock picking. This lock is ART approved with a protection level of 9/15, which means that it meets the highest security standards. With its primary base color of black, this lock matches perfectly with any bicycle. Product Specifications: - Type: Shield - Locking system: Key - ART Approval Mark: ART2 - Protection level: 9/15