Description: 【6 Pieces Classical Guitar Tuning Set】: Guitar String Tuning Pegs Machine Head Tuners Tuning Keys 3L + 3R, constructed with zinc alloy metal and heavy duty 1:15 gear ratio internal gears for enhanced stability and precision 【Accurate 1:15 Gear Ratio】: These Guitar Machine Head Tuners feature a 1:15 gear ratio, delivering smooth, stable, and accurate tuning, making it easy to quickly adjust string tension and set pitch with precision 【Dimensions for Compatibility】: With a 6mm (0.24 inch) shaft diameter, a total length of 30.1mm (1.19 inches), and a shaft length of 27mm (1.06 inches), these Guitar Tuning Keys are designed for classical guitars; PLEASE confirm dimensions before purchase 【Smooth and Effortless Tuning Experience】: The quality open stylish design of these Guitar String Tuning Pegs ensures easy and smooth operation, allowing for easy tuning to keep your guitar in great tune 【Reliable and Versatile Tuning】: This combination of Guitar Machine Head Tuners and Guitar Tuning Keys offers a reliable way to maintain accurate pitch, ideal for both beginners and experienced guitarists seeking consistent tuning performance Specification: Material: Zinc Alloy Size Chart: Total Length: 3.01cm/1.19inch Package Includes: 6X String Tuning Pegs(3L 3R) 6 Ferrules 12 Screws Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.