Made to accept various bits and parts from ratchet to screwdriver. Some generic and space for hex bits. Many spaces for ¼" sockets.
I've used this box close to a year now, and the TPU inserts have held up very well. No particular wear. The bits seldom loosens.
The author remixed this model.
Box: No modifications. Added inserts.
Inserts: Original inserts used as inspiration for dimensions and base structure. Most details adjusted.