Datasheet: Click Here
Diameter (bottom): 33mm
Shaft Diameter: 6mm
With Set Screw
Very Good KnobsThe quality of these is perfect. They show up wrapped in tissue paper and are always in perfect condition. The ridged metal top insert does not photograph well, but it looks great in person. And they are big. They are too large to fit side by side on a 1590b enclosure.
Large, Nice Quality Boss KnobsQuality and price is great. They have metal inserts and set screws like you would expect from a quality knob. They are a little too large to fit side by side on a 1590B enclosure. They are perfect for single knob 1590A projects.