This print contains new (narrow) center to replace paper one in original Prusament spool so it could be used again for storing various materials in your workshop.
And there is also simple stand to keep spool in place.
You can resize center part and connecting tubes in Prusa Slicer to adapt it to width you need.
For stand itself you need to print two side parts and four connecting tubes. They should fit firmly even without any glue. I have printed mine using PETG filament.
The author hasn't provided the model origin yet.