1、Locking Tuning Function: Keep your guitar in optimal condition with the tuning pegs, allowing for quick, smoothly tuning adjustments to maintain perfect pitch effortlessly. 2、1:18 Gear Ratio: Designed for modern 10mm headstock holes, these tuners offer a comfortable and easy adjustment of string tension, ensuring a stable and accurate tuning experience. 3、Heavy Duty Internal Gears: The guitar machine heads feature heavy duty internal gears that are robust and convenient to use. Easy installation and replacement of old or damaged tuning pegs for enhanced functionality. 4、Simple and Stylish Design: The tuning keys boast a stylish half moon shaped design, adding a touch of elegance to your guitar while providing reliable tuning functionality and enhanced aesthetic appeal. 5、Metal Construction: Crafted with premium metal materials, these guitar tuning pegs offer durability and stability, ensuring long lasting performance for your guitar tuning needs.