This is a hanger for a 4 piece set of hex drivers, 1.5-3mm. I sized it to moun to 40mm extrusion, but you can use it mounted a desk or shelf. Should fit pretty much any of the many sets from Amazon. I used this one:
HRB 4pcs 1.5mm 2.0mm 2.5mm 3.0mm Hex Screw Driver Set RC Hex Driver Set Titanium Hexagon Screwdriver Wrench RC Tool Kit for Multi-Axis FPV Racing Drone RC Quadcopter Helicopter Car Models https://a.co/d/1niHMt5
The author marked this model as their own original creation.