Summary

This is a remix/merge of two different filament guides.

The Filament Guide with Roller - Ender 3
https://www.thingiverse.com/thing:3095575

2020 / Ender 3 Filament Guide
http://www.thingiverse.com/thing:2917932

The Roller Guide has a mounting clip that fits in the back side of the vertical bar. I have a guide for the Z-Axis screw there and did not want to remove it. I combined the mounting clip and arm from the 2020 / Ender 3 Filament Guide with the arm and roller guide from the Filament Guide with Roller. I also extended the total length of the arm to improve the angle to the lower filament guide.

I placed all 4 .stl objects on the print using a brim.

The roller and axis pin may need some sanding to allow a proper fit.

I remixed this item to improve the mounting system:
https://www.thingiverse.com/thing:4560858