Extra-versatile files for fret end shaping These unique tools are for use after the frets have been installed, trimmed flush to the sides of the neck, and the ends uniformly beveled with a flat file. They go a step beyond our popular Fret End Dressing File, adding a single-cut toothed concave filing surface. This makes smoothing the fret ends and delicately blending them into the crown of the fret more efficient. A professional touch, and a great fix for fret ends that protrude in dry weather, too.