Material: high-quality plastic material, good durabilitySuitable compatible with metric basins with a diameter of 6mm (approximately 0.24 inches);Compatible with Gibson Epiphone style electric guitarCan replace damaged, messy or old guitar parts with volume control knobsMake your guitar look classic and stand out.Suitable compatible with comcompatible withtable wearing in the hand and easy to install.product Product Type: Electric Guitar KnobHole diameter: 6mmcolour: blackMaterial: plasticsize: 26x12mmPackage Contents: 4xGuitar KnobsOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.