Description:100% brand new and high qualityType: volume control sound knobUsed for dirty, dingy and old knob White knobs with black numbers on it The central hole for pots is approx. 6mm in diameter. Fits most electric guitars Material: AcrylicInner Diameter: Approx. 6mm Upper Diameter: Approx. 17mm/0.67"Lower Diameter: Approx. 21mm/0.83"Color: White with Black Arabic Scale Quantity: 1pcNote:Transition: 1cm=10mm=0.39 inchNo retail package. Please allow 1-3mm error due to manual measurement. Pls make sure you don't mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Included: 1 x Knob (Other accessories demo in the picture are not included.)