Feature: 1. Multifunctional: This guitar maintenance kit is versatile, you can do quick setups, string changes, check string heights some cleaning, maintenance and repairs on your guitar by yourself without having to go to the store. 2. Sturdy And Durable: This guitar repair kit is sturdy and durable, made of aluminum alloy, rust proof, sturdy, fine workmanship, and comes with self adhesive sandpaper strips on all four sides (400, 600, 1,000, and 1,200 grits), which can satisfy your different polishing needs. 3. Easy To Carry: This luthier tools guitar kit is small, lightweight and comes with an organizer bag, which makes it very convenient to carry and use. 4. Efficient: The string spacer helps secure strings during maintenance and cleaning, while the fret rocker assists in detecting uneven fret heights and eliminating buzzing sounds, making it easy for users to handle repairs and setups without the need for professional assistance. 5. Wide Application: This guitar luthier tool set has a wide range of applications, not only for electric guitars, but also for basses, mandolins, banjos, ukuleles and other stringed instruments for better musical performance. Specification: Item Type: Guitar Fret Maintenance Kit Material: Aluminum, Stainless Steel, Emery. Package List: 2 x String Dividers 1 x Clearance Gauge 2 x Fingerboard Protective Spacers 1 x String Height Ruler 1 x Leveling Ruler 1 x Leveling Bar 1 x Fret File 8 x Sandpapers 1 x Storage Bag