Geeetech G2S Pro Mk8 Extruder Filament Guide

This is to be used in conjunction with a piece of 4mm O.D. PTFE tubing. It makes it possible for the Geeetech G2S Pro Mk8 Extruders to handle flexible filament. It also makes it a lot easier to load any regular filament. I tried it with ABS, PLA, PETG, and Ninja-Flex and they all fed great!