Description These professional rotary knobs are made of high-grade material which is practical and durable for long-lasting use. Corrosion resistance fine workmanship no burrs. Light weight easy to carry and use. Great for potentiometer knobs as well as volume control knobs for sound equipment. Features -Color:Light Brown -Material:Plastic -Size:2.50X2.50X1.39cm/0.98X0.98X0.55in - Easy to install they are not easy to age solid material very durable and anti-corrosive. - The potentiometer knob is used to connect a rotary potentiometer and is usually used as a volume control . - The guitar volume knob comes with scale which allows you to adjust it easily and quickly. - This product can be given as a gift to friends who own a guitar they will need it. - With simple structure these guitar volume knobs are very easy and convenient for you to install and remove.