Small spool holder for Ender3

I made this small spool holder for my Ender3 because the small spools for my TPU would not fit onto the standard spool holder. This is a no frills holder that slides into the back side of the existing one. You can mount it as shown or unscrew the standard one and flip it around so the small spool is on the front. It depends on which has the best path for you.

No additional parts needed.

I printed it with the lip side down with no supports.
standard quality .2 20% fill