Adjustable rotate button potentiometer is a manual elements 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. Features - Color: Assorted color. - Material: . - Size: 2.30 x 2.30 x 1.70cm/ 0.90 x 0.90 x 0.67 inch. - Easy installation, not easy to age, sturdy material, inner hole copper core, and anticorrosive. - Potentiometer rotary knob is useful for connect the rotary potentiometer, usually multiturn linear potentiometer which always use as volume control . - Replacement part for audio device, round shaft can be push easily. - The knob made from , lightweight design, appearance, practical and durable. - These knobs are solid, wear resistant, and the service life is ideal. Package list: 10 x knob caps