Guitar Fret Crowning Narrow Double Edge Tools + Bass Guitar Leveler Fret Files with Adhesive Sandpaper + 2 Protecto FingerboardSuitable for burnishing guitar fret to make the surface more smooth and rust-proof. The product is made of premium 6061 aluminum with nice oxidation and coated with a protective film all around to avoid scratches. There are four types of grain paper with #400, #600, #1000 and #1200 to meet different requirements. Suit for electric guitar, acoustic guitar, electric bass guitar, electrical box, etc. Two in one luthier power supply-The threshold beam works well for both fret chamfering and threshold leveling. A great assistant tool for luthiers and guitarists. The package contains an additional 4 pieces of self-adhesive granular papers, which extend the service life of the sill bar. It comes with 2 pieces of fretboard protectors, one of them is wide and the other is narrow. Prevents scratching or damaging the fretboard of your guitar or bass when folding and polishing frets. Leveling Beam Size: 15*3.8*2.5cm Item Weight: 134g / 4.73oz Fingerboard Protector Size: 78*22mm, 76*13mmFret Crowning Size: 18.5*2cmNote: The guitar neck shown in the picture is not included. Color: BrownMaterial: Aluminum Alloy + Stainless SteelPackage Contents:1 * Guitar Fret Bundle4 * Extra Grain Paper2 * Fingerboard Protector1 * Crowning Fret Only The Above Packaging Content