Filament Spool Roller w/ 608 bearings - Snapped together and no bolts - Linear Alignment Rail
Remix of https://www.thingiverse.com/thing:2185015
EDIT-8/11: Tolerances of Rail have been adjusted. Tested with a layer height of 0.15mm
Additional Notes:
The author remixed this model. Imported from Thingiverse.