Feature:1. LOCKING HEAD: These guitar tuners are equipped with locking head, which ensures that the strings are securely locked, prevents out of tune, and provides stable pitch performance.2. GOOD STABILITY: These guitar locking tuners have better tonal stability and can maintain accurate intonation even with frequent string bending or the use of vibrato technology.3. EASY REPLACEMENT: The locking head design makes guitar string easier to replace, reducing the hassle of winding, allowing you to quickly change strings and maintain sound.4. EXCELLENT METAL: These guitar locking heads are made of excellent metal, with high hardness, wear resistance and corrosion resistance to ensure their durability and reliability.5. SPECIFICATIONS: Includes 6pcs guitar tuners, 3 left and 3 right hand design to meet different usage needs, perfect for guitarist or beginner to enhance playing skills and tone stability.Specification:Item Type: Guitar Locking TunerMaterial: Metal.Package List:6 x Locking Tuner6 x Nuts6 x Gaskets