The mount holds the bike light in a snug fit.
Use M3x4 screw to fix the light in the mount (optional, but recommended).

Due to the tight fit, PETG is recommended (Also because of the dynamic loads on the part during driving)

Printing in the shown orientation will provide maximum strength to the part since all layers are aligned in the load directions. Printing from the bottom (screw hole) to the top (go pro lugs) is NOT recommended!