Sadowsky Pot Shaft Width

[Kinetic Shadow]

I'm looking into getting some of the Sadowsky knobs and can't find what the shaft widths of the Sadowsky stacked pots are. Their site only mentions that the single knob will fit a 1/4" shaft, but doesn't mention anything for the stacked. Anyone know?

[Kinetic Shadow]

Just in case anyone else is wanting to know, I found out that the stacked is also 1/4" from Sadowsky. I'm assuming the top shaft is 3/16".

I've now been told "The bottom knob is 8 mm (.315") and the top knob is 6mm (.236")."

[Slowgypsy]

I've got an official stack knob set from Sadowsky. I just put calipers on them. The bottom hole is .317" and the top hole is .238".