- Versatile Tool: Designed for use with guitars, basses, mandolins, and banjos, making it an essential addition to any musician's toolkit. - Easy-to-Use Measuring Tool: The String Action Ruler can be utilized from both sides, providing clear readings that simplify the process of checking and adjusting string actions. - Comprehensive Maintenance: This tool covers all string adjustments and settings, ensuring your instrument remains in peak performance. Easily change strings, set tone, adjust action, and check string height. - Variety of Shapes: The guitar files included come in various forms—flat, round, and semicircular—allowing for precise filing and maintenance suited to your specific instrument needs. - Practical Applications: 1. Regularly check and adjust string height to optimize playability and sound quality. 2. Quickly change strings during performances or practice sessions without hassle. 3. Customize the action of your instrument to suit your playing style, enhancing your overall musical experience.