I designed this to mount the Bryton Gardia radar/light to the rear rack of the Aventon Aventure v2. Needs 4 M3 x 5mm heat set inserts on the front piece and 2 M3x16mm screws to bolt the back plate on. The quick connect mount is reused from the seat post mount that comes with the Gardia. All holes are slightly undersized so they may need to be drilled out.