Fret File Features: 1. The guitar fret file is constructed with heavy-duty stainless steel for durability; a layer of rubber wrapped on for comfortable grip. 2. The crowning file is equipped with narrow, medium and wide groove, fits most fret specification, 3 corner file, convenient to use 3. Not only suitable for crowning guitar fret for electric guitar, acoustic guitar, Ukulele, etc; a simple way for crowning frets if they are worn. 4. The fret crowning measures 19.5cm/7.68 inch in length, the Silver file part 8.5cm/3.35 inch long and the black rubber part 11cm/4.33 inch . 5. This file is a tool to make your fretwork more effective and time-saving effort, a great addition to your guitar maintenance kit; good gift for guitar players. Fretboard Protectors Features: 1.Bendable stainless steel fretboard protector. 2.Comes with 2pcs fretboard protectors, one is wide and the other narrow. 3.Prevents scratching or damaging to guitar or bass fretboard when filing and polishing frets. 4.Useful for luthiers, guitarists, and DIY for many fret works. Material: High carbon steel,Stainless steel,Rubber Type:Fret tool Model Number:Guitar Fret Luthier File Color:Silver & Black Fret File Size:Overall length 19.5cm/7.68 inch, the Silver file part 8.5cm/3.35 inch long and the black rubber part 11cm/4.33 inch Fretboard:78*22*0.44mm Small Fretboard:78*13*0.44mm Package Contents: 1 * Fret File 2 * Fretboard Protectors Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.