This thing is an insert for the pegboard double ring holders. Even though it looks quite different, I wrote this code based on the "Pegboard hex driver adaptor" thing #1727845 by CyFire.

I've always found these double ring holders to be quite useless because the rings are too large and it's easy to miss both rings when trying to insert a tool.

With the customizer, you can an make an insert that will both fit the double ring and the tool perfectly. I have provided an example STL file that fits the double rings pegboard holder I have, but more than likely, you'll have to customize the design to fit your holder.

I've updated this project over at: https://3dprints.electronsmith.com/pegboard-double-ring-insert/