3d printable angled light mount

Would like to have an .stl file created similar to the photo of the mount provided, preferably a 15 degree angle, but using the dxf part file for the mounting hole options. This is to fit our roof rack we already produce but allow customers to have their side lights angled downward to the ground for better visibilty.

Visit https://www.southernstyleoffroad.com/product/05-tacoma-roof-rack/ for an idea of application.