Features: These guitar replacement parts are made from metal and include mounting screws, ready for installation. Guitar jack plate: A high-quality replacement output jack plate socket for guitars, suitable for various guitar styles. Guitar roller string trees help improve tuning stability, especially when using a tremolo system. They allow smoother tuning by rolling with the string tension. Guitar string tree guides reduce friction and prevent wear on strings, extending string life. Ideal replacement for broken, worn, or old string retainers. Package Includes: 2 pcs guitar roller string trees, 1 pc guitar loaded jack socket plate, 1 pc guitar neck plate, and mounting screws. Specifications: Material: Metal Size: As shown in the image Color: Gold, Silver, Black (optional) Note: Please allow 1-2 cm measurement deviation due to manual measurement. Due to differences in monitor displays, the actual color may vary slightly from the image.