I had several filament tanglements with this spool design. Both on a Prusa with a standalone spool holder and an Ultimaker 3 with the integrated spool holder. (it doesnt even fit on the Ultimaker3 without modification from a side cutter). So I would suggest another design. Maybe this Roller version works better (not in use for longer yet) https://www.thingiverse.com/thing:2844605
Small Modification of the new Little MasterSpool from Das Filament to have a place to stick the label on. It includes the holes to put filament through to prevent the spool from opening when filament is put on. I imported the original STL so the quality is not perfect but good enough. I also added some small holes to fix the inside end of the filament to the spool since it often got loose in my experience.