This is a parametric 4mm screwdriver bit holder.

The sizing calculations are intended for generating models that will be used with the Gridfinity system. The OpenSCAD file doesn't generate the bin profile because I wanted to be able to insert some magnetic sheeting between the holder and the base for a little additional security.

Included is both parts of a 1x2 holder, which holds 66 bits. The source file I use for generating different shaped bases is in [https://www.printables.com/model/939355-gridfinity-bin-base-profile-parametric,](https://www.printables.com/model/939355-gridfinity-bin-base-profile-parametric,) or you can use other types if you don't like that base style. Comment if you would like me to generate other sizes.