Features: Made from solid metal alloy, these guitar tuners feature triangular knobs for increased sturdiness and consistent adjusting function, ensuring long lasting use for guitar components. Heavy duty internal gear with a 1:18 ratio ensures smooth and consistent string tension adjustment for stable adjusting, providing exact adjustment for guitar tuners. Designed with a 2R2L configuration, these adjusting machines fit acoustic, electric, classical guitars, and ukuleles for broad application, offering wide ranging use as replacement tuners. Perfect for upgrading old or dirty adjusting pegs to improve instrument functionality and improve adjusting accuracy, enhancing guitar adjusting quality. Equipped with installation screws for straightforward and quick arrange, making replacement simple and user friendly, facilitating easy use for guitar accessories. Specifications: Materials: Metal Color: As The Picture Shows Package Weight: approx.98g Size: approx.9.2x6.1x2cm/3.62x2.40x0.78in Package Includes: 1 Set of Guitar Tuners with Screws note: Please allow 1-2cm error due to manual measurement. Please 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. Thanks!