Aluminum Guitar Bass Fret Leveling Beam - Sanding Grinding File Fretbar Leveler Perfect Your Instruments Frets with Precision Features: Innovative Design: The revolutionary fretbar understring leveler allows you to level your frets under full tension without removing the strings, making the process more efficient and accurate. High-Quality Construction: Made from top-grade aluminum alloy, CNC machined for high glossiness and durability. Resistant to deformation and built to last. Versatile Use: Ideal for fret, saddle, and fingerboard sanding. A great accessory for players and luthiers, suitable for electric guitars, acoustic guitars, electric basses, banjos, mandolins, and more. Precision-Ground Surface: Can be used with strings on or off. Ensures quick and accurate fret leveling, improving the playability of your instrument. Multiple Sizes: Available in three lengths: 4.5 inches (114mm): Perfect for spot leveling problematic frets all over the neck, also great for creating fallaway on acoustic guitars. 9 inches (228mm): Designed for smaller necks like ukuleles and mandolins. Also suitable for leveling full-scale necks and spot leveling. 18 inches (457mm): Ideal for leveling an entire neck quickly and evenly, without risking contact with the nut, saddle, or hardware. Specifications: Material: Aluminum alloy Length Options: 114mm (4.5 inches), 228mm (9 inches), 457mm (18 inches) Package Includes: 1 x Sanding Beam (Size optional) Why Choose This Fret Leveling Beam: Efficiency: Level frets without removing strings, saving time and maintaining string tension. Durability: Made from high-quality aluminum alloy for long-lasting use and precision results. Versatility: Suitable for a variety of instruments and fret leveling needs, making it an essential tool for musicians and luthiers alike. Achieve flawless fret leveling with the Aluminum Guitar Bass Fret Leveling Beam. Enhance the playability and sound quality of your instruments with this durable and precise tool.