These professional rotary knobs are made of high-grade material which is practical and durable for 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:Silver -Material:Plastic -Size:2.55X2.55X1.37cm/1.00X1.00X0.54in - Easy to install, they are not easy to age, solid material, very durable and anti-corrosive. - The knob is used to connect a rotary potentiometer and is usually used as a volume or tone control . - The guitar volume and tone 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 and tone knobs are very easy and convenient for you to install and remove. Package list: 2 pcs × Guitar Tone Knobs 2 pcs x 1 × Guitar Volume Knob 2 pcs x 1 × Guitar Toggle Tip Cap