This wall holder is designed to hold replicas of the four precinct keys from Resident Evil 2 as well the Six Winged Unborn Key from Resident Evil Village. Examples of the replicas in the picture are:
There is slight curvature for the forks that the precinct keys slide into that helps keep them in place, and the village key should be inserted sideways then turned at which point it won't be able to fall out.
The upper key prongs are designed for 4.30 mm diameter keys; sufficiently smaller keys may fall through but. The lower key prong (for the Village key) measures 7.88 mm at the opening and then opens up to 16.92 mm afterward.
This part is designed to be mounted with 3M Command Large Picture Hanging Strips (16 lbs) – just one oriented vertically down the narrow section in the center of the back.
I used the 0.15 mm Quality PrusaSlicer preset to print this. Likely some speedier settings can be used, but I wanted to be confident that the curvature details are expressed since that's part of how the key retention works.
The author marked this model as their own original creation.