This has been Designed to hold the “Pocket size driver bit case v2” by @Riffnshred
https://www.printables.com/model/323000-pocket-size-driver-bit-case-v2/remixes
I have made versions that hold 1, 2, and 4 of them.
The author remixed this model.
Used the Bit storage side as a template for the hole needed.