Features: 1.Durable and Reliable: Crafted from high-quality metal, these electric guitar string retainers are designed for longevity and offer a secure locking mechanism for your strings. 2.Easy to Install: These rollers can be effortlessly attached to the head of your electric guitar, providing a quick fix to keep your strings in tune. 3.Enhanced String Stability: These locks prevent your guitar strings from going out of tune, ensuring accurate play and consistent intonation. 4.Smooth Locking: The locks provide a smooth and reliable locking action, allowing you to confidently execute bends, vibrato, and other guitar techniques without concerns of string slippage. 5.Universal Compatibility: These locks are suitable for most electric guitars, offering a versatile locking solution compatible with various string and head designs. Specification: Item Type: Guitar String Retainer Material: Metal Package List: 2 x Guitar String Retainer 2 x Screw