This is a clip which accepts the filament tube grommet supplied by Mosaic Mfg for the Palette 2.
It clips directly onto the filament clamp of the Titan Aero.
I include a guide to support the tube above the grommet because as the print head moves around in the print space, the grommet does not provide enough support to maintain the alignment of the tube to the print head.
I have also found that I can leave the clip on the print head even when I am not using the Palette 2 and am printing from a roll of filament and using a 4MM OD PTFE tube to guide the filament.
Doesn't matter PLA
I found that by printing the part in the orientation that I have saved the file and creating exclusion zones for the supports so that no supports are created where the bores are, the print came out very clean and the supports were fairly easy to remove.