Print in PETG or ABS (better is ABS because of UV-Light)

Use More perimeters like 4-5

the Holes are 4mm to mount the light

the distance between the two holes is 61 mm

needed these for lights at the trailer (like: https://www.amazon.de/LED-MARTIN%C2%AE-Sparset-Umrissleuchte-Begrenzungsleuchte-Positionsleuchte/dp/B016XVVGB6/ )

The ones I got did not have the mounting bracket (only the lights, see the link)