Description Description: brand new and high quality Type:Volume tone control knob Used to replace the dirty, dingy and old knob Colorless transparent knobs with white numbers on it The central hole for Pots is approx. 6mm in diameter. With white Arabic numeral scale Will fit most electric guitar Material:Acrylic Inner Diameter: approx. 6mm Top diameter:approx. 17mm/0.67 Bottom diameter:approx. 21mm/0.83 Color:Transparent knob + White number Quantity: 1 pc Note: Transition: 1cm=10mm=0.39inch No retail package. Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Knob(other accessories demo in the picture is not included.)