🎶 Tune In, Rock Out! Elevate your sound with Guyker's precision tuners. Crafted with heavy-duty internal gears for long-lasting performance. Chrome plating adds a modern touch to your instrument, making it stage-ready. Experience unparalleled accuracy with a 1:21 gear ratio for fine adjustments. Quickly replace your old tuners with included mounting screws and bushings. Perfect for electric, folk, or acoustic guitars—upgrade your entire collection. 6 pcs included sealed housing 1:21 gear ratio The Guyker Guitar Machine Heads (3L + 3R) are high-quality sealed tuners designed for electric, folk, or acoustic guitars. With a 1:21 gear ratio, these tuners ensure precise tuning and stability. The package includes all necessary components for easy installation, making them an ideal replacement for your old tuning pegs.