🎸4-IN-1 STRING BEVEL FILE: Remove protruding and sharp edges with 3°/23°/35°/90° angles! This fret and bevel file fixes fret ends in minutes - perfect for emergency repairs or routine maintenance 🎸GUITAR STRING TOOL: The guitar fret file is made of durable hardwood. The rust-resistant carbon steel blades feature a four-sided polished design for scratch-free fret grinding, protecting your valuable instruments 🎸COMFORTABLE CONTROL · COST-EFFECTIVE: The fret end file has a wide, non-slip handle that fits perfectly in your hand for lightweight comfort. Say goodbye to expensive repairs! This fret crowning file quickly removes burrs, saving you money 🎸QUICK LOCK ADJUSTMENT: Select the angle and tighten. Coarse cross-grinding + fine single-grain quickly removes burrs. Achieve silky smooth fret ends for better playability with this fret and fret file 🎸UNIVERSAL USE: This professional guitar fret file kit works on all fretted instruments - guitars, basses, ukuleles, banjos. Essential luthier tools for every player and instrument builder's workshop