Makergear M2 Universal Spool Adaptor
This is a Universal Spool Adaptor for the Makergear M2 ( http://www.makergear.com )
Here are a couple of inserts:
Universal: http://www.thingiverse.com/thing:104200
Taulman: http://www.thingiverse.com/thing:55942
I also have a filament guide to compliment this at http://www.thingiverse.com/thing:49937
Update 5/23/2015: Replaced file with a repaired version (previous was non-manifold)