Guitar Fret Crowning File 4 Edges Luthier Tool Wooden Handle Maintenance File for Electric Acoustic Guitar Ukulele Bass Banjo. Feature: 1. Versatile Slots: The guitar fret file offers four slots, making it suitable for a wide range of string instruments. 2. Precision Edge Finishing: This guitar fret dressing file includes a flat file specifically designed for rounding off fret edges and ends. 3. Comfortable Wooden Handle: The handle of the guitar fret crowning file is crafted from solid wood, providing a comfortable and ergonomic grip. 4. High-Quality Durability: Constructed from premium carbon steel, this luthier tool is built to withstand regular use and maintain its effectiveness over time. 5. Wide Instrument Compatibility: Designed to be compatible with a broad range of string instruments, this guitar file is an essential tool for musicians and luthiers.