Feature: 1. 4 Slots: The file comes with 4 different slots. The 1mm slot is suitable for narrow frets like ukulele, the 2mm slot suits all standard guitar, bass, banjo, mandolin, etc., the 3mm and 4mm slots are suitable for larger frets 2. Square Handle: The square handle is designed for secure grip. Its shape conforms to the curve of your hand, preventing slips and ensuring secure hold, allowing for easier application of pressure, to achieve accurate results 3. Versatile Use: In addition to flattening the fret tops, this file can also be applied to file down incisive fret ends, suitable for rounding off fret edges and ends, making it a practical tool for maintaining the comfort of instrument 4. Protective Plates: Equipped with two protective plates, designed to keep the incisive edges of the file secure during storage and transport, ensures that the file remains in well condition, and use whenever you need it 5. Enhanced Grip: Crafted from solid wood, the file handle offers comfortable grip and stable control, making it easier to maintain control during fret flattening, and avoid fatigue even after prolonged use Specification: Item Type: Fret Crowning File Material: Elm Wood, Carbon Steel Specification: 4 Slots (1mm, 2mm, 3mm, 4mm) Total Length: Approx. 10mm / 0.4in Handle Diameter: Approx. 20mm / 0.8in File Length: Approx. 121mm / 4.8in File Diameter: Approx. 10mm / 0.4in. Package List: 1 x Guitar Fret File 2 x Protective Plates