Spool mount for 6mm thick Prusa i3

Remixed from http://www.thingiverse.com/thing:670957

UPDATE 5/17/2015: Just realized I uploaded the wrong files originally. Sorry about that. Files now match the photo.

A bearing based spool holder for various sized rolls.
Get a pair of 10cm, m8 threaded rods, or a 12" 5/16" threaded rod cut in two, and eight 8mm nuts (or 5/16" if using US sized materials) and four 608zz bearings.