Compact multiple spool holder for small spaces

Compact multi-material spool holder for small spaces.
Spools can be replaced randomly.
Using the bearings and the PTFE tubes form the original prusa kit.
Use two custom size M8 steel rods with acorn nuts for safety.
Spools of up to 200 mm diameter and any width.
Using the clip and tubing from below keeps the spool in place even when its almost empty.