Ths holder is made for holding the wrench from the 3dSolex Olsson Block and holds nozzles 0.20, 0.25, 0.3, 0.4, 0.5, 0.6, 0.8, 1.0.
A non-occupied screw hole indicates the size of the nozzle actually installed in the printer

The wrench from Anders Olsson can be found here: https://www.youmagine.com/designs/nozzle-torque-wrench.

References: https://youtu.be/wxNeOJ3Bybohttps://3dladnik.wixsite.com/workshop/nozzlesorganizerPrinted on 3D Printer Lad-1.0: https://3dladnik.wixsite.com/workshop/lad-1-0