originally made for a drybox that was low and I've had only bout a 1cm to work with so this holder will make spool only about 3 or 4 mm higher so it can fit in smaller spaces.
spool_holder.stl file contains full 4 parts ready to print.

-fits spools with 54/55mm side holes (fits eSUN spools)
-2x608 bearring
-anycubic kobra 2
-10% infill
-no supports needed