The file 'Saddle Rear Light Mount 3D Printer Model' is (stl) file type, size is 94.7KB.
I came across this design https://www.thingiverse.com/thing:4858394/remixes, but dint fit my nitrider cherrybomb 100 rear light. So I added a cylindrical post so most lights can be mounted. Printed in PETG.