Features:Cheerock 4Pcs Potentiometer Control Electric Guitar Knobs is a perfect gift for you or your friends.Our products are made of high-quality solid brass, which is very strong and can guarantee long-term use.Simple and quick install.Compatible with most Fender Tele, Gibson Les Paul, Strat style electric guitars or precision bass instruments,corresponding to the potentiometer cap installation inner aperture 6mm.Specification:Meterial: solid brass+natural abalone shellKnob Diameter: Approx. 0.78" / 20mmHeight: Approx. 0.78" / 20mmHollow Shaft Diameter: Approx. 0.237" / 6mmPackage Included:4 x electric guitar abalone knobsThe Best Unconditional 60 days Guarantee For Free!Cheerock hope you have a pleasant shopping experience with us and satisfy 100%.If there are any items or delivery problems, please email contact us first, we can address your concerns in 24 hours usually. Please give us the opportunity to resolve any problem, Thank you!Cheerock provides a 100% money-back guarantee within 60 days, If your product is has a manufacturer defect, we want to improve your experience by giving you a replacement or refund.