These parts clamp around the original PTFE feed/guide tube using factory allen screws and nuts allowing you to feed filament into the Prusa Enclosure through the front top plug.
This allows you to use larger spools outside of your enclosure.
This part kicks the tube to the right hand side as you look at the enclosure which may interfere with the factory spool holder, if you want to avoid this then mirror the part.
Printed on Mk4IS using 0.2SPEED profile and Prusament PLA.
EDIT: Updated files to have a thicker top plate as mine snapped after a month or two.
Also added the .bgcode from my Mk4IS to print both updated files mirrored.
The author marked this model as their own original creation.