I made this, since no other gridfinity wrench holders fulfilled my expectations.
Fits 7 cheaply made wrenches, the largest one being 5.9mm wide and the smallest one being 2.6mm wide. If yours don't fit properly, just head them up a little.
Printed mine in PLA and 0.6mm nozzle but anything should be fine here. No supports required!
The author remixed this model.
Used it as a template for my design