Guitar Knob D Shaped Shaft Volume Knobs for Electric Bass Enthusiast Specification: Features: Adopting aluminum and plastic material durable and anti-corrosion. The installation hole is designed for D shaped shaft. Widely as guitar or bass potentiometer volume tone knob caps. 10pcs coming in a package meeting your different use needs. for replacing the old or broken ones of your electric guitar or electric bass. Specification: Condition: 100% 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 SizeDia 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