Side spool holder with removable rollers.
Use superglue for upper and lower part, doble sided adhesive tape fore mounting on the printer.
You will need Ball bearings 6000 (10x26x8)
download the PTFE guide here:
https://makerworld.com/en/models/55775#profileId-57296
and the Filament cleaner here:
https://makerworld.com/en/models/64833#profileId-68076