The file 'E9X Cupholder Remix | Modified To Fit 220 X 220mm Beds 3D Printer Model' is (stl) file type, size is 373.7KB.
Just slightly trimmed the edges so that it can fit inside the bed on my Ender 5 S1 (220x220mm). Should still bolt up no problem!
Highly recommended to print in something high temp resistant! Cars can get well over 60c inside on a hot summer day.