This model needs to be used with dowels. The holes of the mount are having 23mm diameter and should fit 22mm of (wooden) dowels (like in my case). If there are any troubles i've uploaded the cad model for adjustments.
If there are a lot of wished for a certain measurement i can adapt it aswell :)
I recommend it printing with some more infill and maybe thougher materials. Maybe you have to check on your own. In any case just use more of the mounts inbetween of a dowel.
If it's very close and the dowels are barely not fitting - just use a little sanding paper and sand down the holes.
1kg spool version: https://www.printables.com/model/685087-filament-spool-wall-mountrack-varoe
The author remixed this model.
Scaled it for 2.5kg spools - fits for 22mm dowels. Holes are 23mm