This bicycle tail light saddle seat-post mount holder bracket is the perfect accessory for cyclists who prioritize safety and visibility on the road. Designed to seamlessly integrate with Garmin Varia Rearview Radar and RTL510 bike tail lights, this bracket offers unparalleled compatibility and functionality. Its quick and effortless installation process makes it a breeze to mount, while its durable construction ensures unwavering reliability. Compatible with bicycle seat cushions with a fixed point center distance of 53-58mm, this bracket ensures a snug fit.