This handy clip can be used as a keyring, to hang things up or to organise cords and cables.
There are files for 20mm, 30mm, 40mm, and 50mm rings. When slicing you may need to set the horizontal expansion to a negative value so that the gap prints correctly, and then once printed you may need to heat up the clip and bend it to make it lock tighter.
The author marked this model as their own original creation.