You can use it to mount your radar tail light or bike tail light at the back of the bike saddle, it is more safe than fixing the Radar taillight on the bicycle seatpost. Designed with 4 fasten screws, stable and secure. You can adjust the angle of the taillight freely. Made of reinforced nylon, strong but not harmful to your bicycle and taillight. Compatible with most bike saddle with 2 stick bow. Coming with tool, easy to install and remove. The seat bow clip designed with a universal interface for GoPro, it can be used separately as a hero action camera holder, hang your action camera at the back of the saddle and enjoy videos from different views. Compatible with: Garmin Varia Rearview Radar RVR315 Garmin Varia RTL515 Rearview Radar Tail Light Garmin Varia RTL510 Rearview Radar Tail Light Colour: Black Size: length 94MM Packing includes: 1* Garmin Varia Rearview Radar taillight holder Note: Garmin Radar taillight not included.