Prusa i3 spool holder system

Hello guys!
This is my first design that I publish here. I hope You will like it.
Inner ring (spoolroll.stl) to make rotations of spool easier is designed for spools with inner 60mm diameter.

Things that You will need to assamble it:
2x M8x20cm threaded rods
1x M8x30cm threaded rod
4x 608ZZ bearings
12x M8 washer & nut

Print everything twice and assamble like on photos.