This is a Gridfinity part designed for the organization system designed by Zack Freedman.

If you don't know what Gridfinity is, check out Zack's original video, his original designs on thangs and this unofficial specification.

This is a 3x4 Girdfinity holder for the Wiha 50 piece precision driver set. I have included the source files, if you want to make any tweaks.

If you want smaller holders for 10 piece sets, I have a set of five, designed for the 50 piece set, here

My design was based of off this template.