support ring to fix and plug ptfe tube if filament 1 75mm is not in use —

Founded support ring to fix and plug ptfe tube if filament 1 75mm is not in use models & stl files for printing
TUBING PTFE CUTTER
Archimede3D
PTFE Cap  Endplug
MakerMeik
Filament ruler
hsiehty
PTFE Cutter
paulorfo