About this 3D model

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)