Snap-On guider for IRobertI v6 Feederthis one has tight tolerance and hole for pipe cleaner to oil the flexible filament after the drive wheel. for use on filaflex and ninjaflex type filamentsthere are 2 versions, 1 with a cutout for a piece of Bowden tube.
Technical
Pipe cleaner with the end twisted in a loop, this goes in the hole of the snap-on guide and your filament goes through the guide and through the hole in the pipe cleaner.
sewing machine oil is then put on the pipe cleaner which lubricates the filament.