The Dspiae spherical vise AT-SV comes with an awkard long hex key and they want you to buy the thumb operated key separately (SV-V01). It also seems difficult to find over here. This is a quick alternative option to fill that gap.
This one was printed at 0.3mm in PETG. 100% infill for the shaft and top few layers of the thumb wheel to give it strength, 20% in the rest of the thumb wheel for speed and reducing waste.
The author marked this model as their own original creation.