Product description:
1.Durable hemispherical volume tone control knob for electric guitar/bass
2.Damaged,dirty or old control knobs can be replaced well
3.Add luster to the guitar
4.It is made of high-quality steel and abalone shell, so it is durable and not easily damaged
5.The Inner hollow shaft diameter is approx.6mm(0.24 inch) in diameter;Outside diameter:approx.20mm(0.78inch);Total height:approx.20mm (0.78inch)

Specifications:
Weight:79 grams
Color:black and abalone shell
Size:2.0 * 2.0 * 2.0cm
Material:steel and pearl abalone

Package Included:
3*Guitar knobs