After printing the ring spools, I noticed that the normal clips were no longer compatible and I couldn’t find anything online about it, so I designed new ones.
The ring spool i'm using is this:
https://makerworld.com/it/models/115242#profileId-123947
They are made for polymaker' spool, but if u want use them also for the eryone's u can scale the model like this:
X: 199.80 (98.91%)
Y: 199.80 (98.92%)
Z: 5.5 (100%)
I've printed them in ABS. Don't know if in PLA could work, if yes, let me know in the comment!
Enjoy!