This is a headrest mount for an Ablenet Jellybean switch, which is 84mm in diameter with a ~4mm lip. This clip can open up to 45mm wide.
If you make this, it would be awesome to see pics of your makes!
I've printed this on a Prusa MK3S at 0.15mm layer heights without issue. Supports are required, but I did use support blockers for the big arching curve since the overhangs there aren't bad.
Also, there is a small chamfer on the bottom (0.4mm @ 45 degrees) that should help minimize the "elephants foot" effect.
The author marked this model as their own original creation. Imported from Thingiverse.