Ender 3 Filament guide

This is a filament guide I designed to use one of the many bearings i had laying around from my fpv racing hobby. it needs a m3 screw about 10-16mm long, and a 3id x8od by 4mm wide bearing found in older 2205 brushless motors for multicopters like:
http://www.myrcmart.com/brushless-motor-bearing-%CE%A63%CE%A684mm-nmb-p-8357.html

The roller has a guide that can be clipped in or out to allow easier filament loading.
I printed it in pla and have been using it for a little while now. The screw