Simple Filament spool bearings kit

A filament wheel bearings kit for the person with no metal bearings, extra filament, and time. Assembled, it works great, for the 1k spools, the end cap snaps on OK, especially if printed lowest quality. Channel the builders of the pyramids and try out these long bearings.
Anyways, I didn't have any bearings at home, couldn't get some print-in-place bearings to work, and also needed just this size.

--This kit assembles over the original ender 3 spool holder.
I printed in PLA, fastest setting.

*edit* my cap fell off. I now put a piece of tape on it (the endcap).

*edit* finally found time to fix this design-- sheath is a little thicker, bearings are a little thinner (to fit), and the endcap locks on. When locking on the endcap, if poor adhesion makes the tabs split, just superglue them. When you tighten the endcap, it won't pull it apart.

*edit* I redesigned this, and deleted the last design- it was bad. The current one is working better-- it has improved end caps and a li