Guitar roller string trees retainer set with mounting screws for electric guitars. Durable iron construction and low profile design help maintain consistent string tension and reduce slippage, improving tuning stability and playability. Key benefits Keeps strings seated and prevents slippage for more stable tuning. Roller mechanism reduces friction at the headstock, allowing smoother string movement and less binding. Lightweight and compact, designed to preserve string angle and tension without adding bulk. Simple installation with included mounting screws makes it easy to upgrade or existing string trees. Available in silver, black, and golden to match different headstock finishes. Features and specifications Material: Iron for durability and reliable performance. Colors: Silver, Black, Golden. Package weight: approximately 5 g. Size: compact, as shown in product images. Package contents: 1 set of guitar string trees retainer with mounting screws. Suitable applications Live performance: Keeps tuning more consistent during onstage playing and quick string bends. Studio recording: Helps maintain steady tuning and even string tension for cleaner takes. Practice and setup: Useful when adjusting headstock string angles or replacing worn string trees during maintenance. Installation and compatibility Fits most electric guitars that use string trees on the headstock. Check your instrument for compatible mounting hole spacing before installing. Mounts with the included screws using a standard screwdriver. Position the retainer so the rollers guide the strings smoothly into the nut. Notes Allow a 1 to 2 cm measurement tolerance due to manual measurement. Actual color may vary slightly from images due to monitor differences.