The fret leveling kit is composed of a Pearwood sanding block shaped to fit frets, and a 3" and a 2" straight solid steel pin. The pins are used to check flatness of the frets relative to one another. The 2" pin is for the upper frets where they are closer together. Place the pin across three frets and try to rock it back and forth. A clicking sound will reveal a high fret. Mask off the fingerboard with tape and lightly sand down the fret using the Pearwood sanding block. Begin with medium grit sandpaper and work toward finers grits as desired. Recheck for flatness with the pin and repeat if necessary. When flat, polish with #0000 steel wool
. Repeat up the fingerboard.