Feature 1LOCKING 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. 2GOOD 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. 3EASY 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. 4EXCELLENT METAL: These guitar locking heads are made of excellent metal, with high hardness, wear resistance and corrosion resistance to ensure their durability and reliability. 5SPECIFICATIONS: 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.Item Type: Guitar Locking TunerMaterial: Metal .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List6 x Locking Tuner6 x Nuts6 x Gaskets6 x Screws