What You Get: The set includes 2 guitar tuning knobs (3 left + 3 right), 6 mounting screws, and 6 washers, a comprehensive set to ensure you have the best guitar performanceWide Compatibility: The guitar tuning knobs have a 29mm post spacing, a 6mm shaft diameter, and a total length of 108mm, making them compatible with most electric and acoustic guitars.Easy to Install: These tuning knobs are designed to wo with standard guitar tuning knobs, suitable for replacing old or dirty tuning knobs on your guitar, and are a practical choice for guitarists.Durable Material: These guitar tuning knobs are made of metal and ABS plastic, ensuring durability and long life. The silver finish adds style and elegance to your guitarPrecise Tuning: These tuning knobs are designed with a 1:15 gear ratio, providing accurate and smooth tuning, ensuring your guitar stays tuned and stable for a long time