The frame lock RS 453 Protect-o-Connect is the ideal basic security for your bike or e-bike. Permanently mounted on the frame, it can be locked or unlocked with a flick of the wrist. If you ever want to park your bike or e-bike for a longer period of time, the RS 453 can be extended with the insertion chain ZR 355 (included in the set). This allows the rider to connect the bike to a fixed object. The Balloon variant of the frame lock (passage 72 mm) is suitable for particularly wide tires. Installation is simple using the supplied mounting clamps or directly with screws on the bicycle frame.