Features: Keep your guitar strings firmly in place with these guitar string trees retainer.Made of metal, these retainers feature a reliable design to prevent string slippage and maintain optimal tension during play.The roller design of our string guides helps to evenly distribute stress on the guitar strings, which not only keeps the instrument in tune but also reduces string wear.Perfectly designed compatible with electric guitars, our Guitar Roller String Trees Retainer serves as an excellent replacement compatible with worn or damaged string retainers.Our advanced roller string guides are meticulously designed to minimize tuning issues and unwanted sympathetic vibrations.Specifications: Materials: MetalColor: Silver/Black/GoldSize: about 5x7cm/1.97x2.76inchPackage Includes: 1set Guitar String Retainernote: Please allow 1-2cm errors due to manual measurement, make sure that you not mind becompatible withe you order. Due to difference between different monitors, the picture may not reflect the actual color of the item.