About this 3D model

It's a spool roller with the exact same design as Airtripper's Pocket Filament Reel Rollers, but that uses half the bearings. All credit to **Airtripper** for this fantastic and useful design! **Update April 7** The description said that a piece needed to be mirrored, but it doesn't. To use this thing you must print 4 identical pieces.