About this 3D model

I made this to support a 5lb spool of Black PLA I got from http://ultimachine.com/. It works but I am likely to draw up something that allows the thing to roll with less friction. The spool is leaving black wear marks on the part. Customized version of http://www.thingiverse.com/thing:44906 Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=44906