Potentiometer knob black diameter 30mm silver pointer

Black potentiometer knob shaft 6mm
Specification:
Diameter: 28.7mm
Height: 17mm
Shaft diameter: 6mm
Material: aluminum exterior, ABS interior
Knob color: black
Indicator color: silver
These knobs fit all types of rotary potentiometers:
linear
linear stereo
linear with switch
linear sized 9×11
logarithmic
logarithmic stereo
some types of encoders