It is a good accessory for your guitar.Features:A great part for your guitar.A volume potentiometer with 16mm base.Split shaft with coarse knurling.Coarse knurled shaft fits most control knobs.Specifications:Material: MetalShaft Length: 15mmShaft Diameter: 6mmBase Diameter: 16mm Package Size: Approx.3.5 * 2.2 * 2cm / 1.4 * 0.9 * 0.8inPackage Weight: Approx.9g / 0.3ozPackage List:1 * Guitar Potentiometer