LinkMejor 4pcs 21mm x 6mm Alloy Potentiometer Knob Mini Cap Knurled Button Black

1. Potentiometer Knob Caps are useful for rotary Potentiometers, especially for multiturn linear potentiometer which has volume control switch.2. Knurled cap, easily achieve clockwise and anti-clockwise rotary controlling.3. Perfect replacement part for audio device, 6mm round shaft can be push on it easily.4. 360 degree rotary knob for easily control the potentiometer.5. Potentiometer Knob Caps Only! Does not include potentiometers.