Rotary knob without marker for 6-mm axisThe cross-cut collets in the knob body are pressed around thefull circumference of the potentiometer/switch nuts with a secure and non-slip fit by tighteningthe hexagon nut.
The shiny, conical knob body is roughly notched around the circumference for secureoperation.
The collet chuck is sealed by the cover.
Please order cover separately!