Universal Compatibility: Designed to fit almost all types of guitars, these guitar tuners 6 inline are compatible with both acoustic and electric guitars. The acoustic guitar tuning pegs ensures your strings stay in tune, providing reliability and ease of use for musicians at any levelAdvanced Design & Sturdy Material: These locking tuners feature a square button design made from high-quality Zinc Alloy Iron, ensuring longevity and resilience. The heavy-duty internal gear and fine-sealed machine head offer precise tuning, perfect for both locking tuners and locking guitar tuners needsComplete Set with Accessories: Each package includes a 6-in-line set of right-hand locking guitar tuners, along with a nut, ferrule, and screws. The enclosed chrome finish adds a touch of elegance and durability, making it an excellent choice for professionals seeking high-quality guitar tuning pegsEasy Replacement and Installation: Our guitar tuning pegs keys are a perfect replacement for old or broken tuning pegs. The sealed housing and 45-degree fixing hole allow for quick and easy installation, compatible with steel string electric and acoustic guitars alikeHigh Precision Gear Ratio: Fits for standard 13/32 inch (10mm) peg holes, our guitar tuning keys are engineered for -precise tuning