DescriptionSanding stone is used to polishing something. It is useful to many kinds of musical instrument. Fret polishing, it gives us a nice smooth feel. Eliminate the need to mask off the entire fingerboard. tool for luthiers, guitarists, and many DIY fret workers.Feature- Color: Orange - Material: Grindstone and Steel - Size: 99x11.8x11.8mm/3.9x0.5x0.5inch(Sanding)78x22mm/ 3.1x0.9inch(Wide Fretboard)78x13mm/3.1x0.5inch(Narrow Fretboard) - Authentic size applies for most of frets. - Sanding beam for filing, polishing the frets and other parts of guitar. - 2pcs fret protector shims for protecting your guitar or bass fretboard. - The shims made of stainless steel, hard-wearing and sturdy.