Ikea Ribba picture frame hook.

The Ikea Ribba picture frame has quite a deep backing and my picture frame hooks didn't stretch enough to hang them on the wall. I found a few alternatives on thingiverse but they were slightly off for the smaller frames.

This will work for large and small Ikea Ribba frames. They will sit the frame tight to the wall without too much tolerance for left/right shifting.

Designed for 10mm screws but 8mm will work fine.

Printing at 10% infill is enough as the part is quite thin.