Features: Adjustable rotate button potentiometer is a manual with manual control. Can control the effect of a variety of functions, such as level, speeds, voice, etc. Can be used for synthesizers, electric guitar, etc. The product is suitable for people to use. Features -Color: Black -Material:Aluminium Alloy. -Size: About2.20X1.80X1.80cm/0.86X0.71X0.71in -Easy installation, not easy to age, sturdy material, inner hole copper core, dustproof and anticorrosive. - Potentiometer rotary knob is useful for connecting the rotary potentiometer, usually multiturn linear potentiometer which is always used as volume control switch. - Replacement part for audio device, round shaft can be pushed on it easily. - The knobs are made from aluminium alloy, lightweight design, exquisite appearance, practical and durable. - These knobs are solid, wear resistant, and the service life is great. Package list: 24 x Potentiometer Knobs