Using the holes in the spool to fix the filament while not in use puts the filament under stress and it tends to break after a while, these clips prevent that from happening.

Compatible with the AMS if only place on the right side of the spool while in the AMS, the left side will rub to much and might cause issues.

The design is completely parametric in case you need to fine-tune the fitment, just open the source file in Fusion360 and adjust the user parameters.

Notes

Made with the personal version of Autodesk Fusion 360 therefore non commercial only.

Source file included.