Amazon.com: KOM Cycling for Garmin Varia Mount Tail Light Models Including RTL515, RTL510, RVR315, Magene L508 Featuring an ATOP Dial for Security - Varia Seatpost Radar Mount and Under Saddle Mount :
Garmin Varia™ RTL 516 Bike Rear Light With Radar Rear Lights | Bike-Discount
Garmin Varia Specialized SWAT Saddle Mount (7L96Y4Q2Z) by MagCAD
Garmin Varia Trek Integrated Seat Post Mount (F6TB7KNJU) by MagCAD
Garmin Varia Specialized SWAT Saddle Mount (7L96Y4Q2Z) by MagCAD