Compact set of 4 machine heads for 4 string instruments, configured 2R 2L for balanced headstock layout. These tuning pegs are designed to worn tuners or upgrade stock hardware to improve tuning control and reliability. Key benefits Accurate and stable tuning: Designed to provide consistent string tension so instruments hold pitch longer between tuning sessions. Symmetrical layout: 2 right 2 left configuration fits common 4 string headstocks for a neat, balanced appearance. Simple upgrade or replacement: Ideal for restoring playability after a broken tuner or for improving feel over basic factory tuners. Durable functional design: Built for regular use during practice, travel, and performance. What this product does Replaces headstock tuning machines on 4 string ukuleles and other 4 string instruments. Allows precise winding and adjustment of string tension for reliable pitch control. Provides a straightforward hardware swap to refresh instrument functionality. Compatibility and fit Intended for 4 string instruments such as ukuleles and other similar small 4 string instruments. 2R 2L configuration matches headstocks that require two tuners on each side. Fits common headstock mount styles used on many 4 string instruments. Check your instrument for matching tuner hole layout before . Function, size, and materials Function: Manual geared tuning pegs for headstock mounting, used to tighten and loosen strings for pitch adjustment. Size and fit: Standard 4 peg set suitable for many 4 string instruments; verify headstock hole spacing and screw positions for fit. Materials: Designed for regular use with a focus on durability and smooth operation. Performance highlights Smooth winding action for finer tuning adjustments. Stable holding once strings are set, reducing the need for frequent retuning during normal play. Robust construction intended to withstand repeated string changes. Use scenarios a travel ukulele with a broken tuner to restore full functionality before a trip. worn stock tuners on a student ukulele to improve tuning stability for lessons and practice. Install machine heads while building or customizing a small 4 string instrument to get a cleaner look and better tuning response. What to expect in use Straightforward installation with basic tools; may require minor adjustment to align holes or screws on some instruments. Improved tuning control compared to heavily worn or low quality tuners. Longer lasting tuning stability under normal playing conditions. Notes for buyers Confirm your instrument uses a 4 peg headstock with a 2 right 2 left layout. If exact hole spacing or screw placement matters, measure your headstock before ordering to ensure compatibility. This set offers a practical and reliable option for replacing or upgrading tuning hardware on 4 string instruments, helping the instrument to stable, accurate tuning and consistent playability.