No-Hassle Filament Clip - 12mm - Printrbot Simple Metal

This filament guide has a built in clip, which allows you to remove and insert filament without having to pull apart your extruder!

* I see now that there's some broken geometry on clip 01, though the part still prints for me (minus the top cap).

_After switching to an overhead spool on a PVC bar, I no longer use this, and don't recommend setups which have the filament routed up and around the printer. Overhanging filament is a drastically better situation._