These and practical knobs are used for instruments. If your knobs are dirty, old, or just want to dress up your guitar. These rotary knobs will be great replacements. Fine craftsmanship without burrs. Do not hesitate to take them! Features -Color:Dark Brown -Material:Metal -Size:1.82X1.82X1.80cm/0.72X0.72X0.71in -Installation size: the internal aperture of the potentiometer is 6MM - They are strong enough, not easily deformed or broken, and can serve you for a long time. - Guitar Rotary Volume Control Knob is strong and resistant to dirt. It feels better and lasts longer. - Simple installation, easy to store, knob is very comfortable to use and is anti-slipping. - Guitar Knobs control the effects of multiple functions, suitable for electric guitars, electric bass, etc. - With the fine workmanship, the guitar volume knob has clear scale, very convenient and practical to use. Package list: 8 x Knobs