I found this on MakerWorld thanks to Lucas G., which was shared from Michel Bauer's Printables model.

I cleaned up the geometry, resized the opening as my case was slightly larger than the original model on Printables. I also added magnet holes to the gridfinity base.

And to match it to the iFixit Tech Tools Pro tools holder, added an inset logo.

Hope you enjoy!

COMPATIBLE:

iFixit Pro Tech Toolkit*

*Other iFixit kits may work, but I am certain this one does. If you have a different kit and this works, post in the comments and I'll update the compatible kits.