Description:Replacement audio knobCan be used as a replacement on AmplifiersFor control the effect of a variety of functions,such as level, speed, voicePlastic control knob to be assembled to a potentiometer for easier rotation.Please be sure to verify the dimensions before you order the knobs Specification:Material: Plastic,BrassKnob Diameter: 15mm / 0.59"Knob Height: 15.5mm / 0.61"Fits 1/4" (6.4mm) shaft pots Package Content : 2Pcs x Rotary Knob