Features: 1.Adopting aluminum and plastic material, durable and anti-corrosion. 2.The installation hole is designed for D shaped shaft. 3.Widely used as guitar or bass potentiometer volume tone knob caps. 4.10pcs coming in a package, meeting your different use needs. 5.Good for replacing the old or broken ones of your electric guitar or electric bass. specification: Adopting aluminum and plastic material, durable and anti-corrosion. The installation hole is designed for D shaped shaft. Widely used as guitar or bass potentiometer volume tone knob caps. 10pcs coming in a package, meeting your different use needs. Good for replacing the old or broken ones of your electric guitar or electric bass. : Condition: 100% Brand New Material: Aluminum + Plastic Color: Black + Silver Quantity: 10Pcs Application: Electric Bass Guitar Fit for: D Shaped Shaft Whole Dimensions: Approx. 17 x 15 x 14mm / 0.67 x 0.59 x 0.55inch Installation Hole Size(Dia x W): Approx. 6 x 4.8mm / 0.24 x 0.19inch Weight: Approx. 15g Packing List: 1 x Pack of 10Pcs Shaft Hole Knob