Bicycle Saddle Mount for Garmin Varia Radar Rear Tail Light Specially Designed Seat-post Saddle Holder for Garmin Varia Radar, work for Varia RTL510, for Varia RTL515, for Varia RVR315, for Varia RTL 500. Material : Aluminum alloy, stable mount for Garmin Varia Radar, Lightweight and Sturdy. Please check your saddle seat bow before buying, for Stainless/Metal saddle seat bow, please use 7*7 transparent spacer to secure the mount with the seat-post saddle; For carbon saddle seat bow, please use 7*9 transparent spacer to secure the mount on the seat-post saddle. How to install: Firstly, loose the screws on the mount, and choose the transparent spacer based on your saddle seat bow, then use the installation tool to tighten the screws untill the mount is secured, Easy to install and very tight Mount to holder your Garmin Varia Radar. Package: 1* Varia Mount for Garmin Radar, 1* Installation Tool, 2pcs 7*7[For Stainless/Metal material seat bow] , 2 pcs 7*9[For Carbon material seat bow]. BININIU Bike Saddle Mount for Garmin Varia Radar, Seat post Mount Tail Light Holder for Garmin Varia RTL500,RTL510,RTL515, RVR315, Bicycle Saddle Mount for Garmin, Bike Seat Bow Mount for Garmin[Aluminum]