1、RUSTPROOF MATERIAL: The main body of the guitar post sanding and leveling beam is made of aluminum alloy material, rustproof, strong, fine workmanship 2、FOUR SIDED SANDPAPER: Guitar fret leveling file comes with self bonding sandpaper all four sides to suit your different polishing needs 3、PORTABLE TOOL: Guitar string sanding beam is small, lightweight, easy to carry and use, ideal DIY luthier tools 4、WIDE APPLICATION: This fret leveling file is suitable for all electric, acoustic, classical guitars, etc. 5、PACKAGE INCLUDES: Guitar leveling file kit comes with a guitar post leveling beam, two guitar fingerboard retainers, a replacement sandpaper and two sharpeners 1 x Sanding Kit2 x Large and Small Pieces of Fret1 x Mixed Sandpaper2 x Sharpen Knife Item Type: Guitar Fret Leveling FileMaterial: MetalProduct Size: Approx. 15.2 x 3.85 x 2.55cm / 6 x 1.5 x 1in