Ready to add to your luthier tool box is a stainless steel fret rocker. If you hear fret buzz and your neck is straight, you may have high or uneven frets. "Rock" this tool on the frets and you will find the high or low culprits. Each side of the rocker is a different length so you can put the tool on 3 frets anywhere on the fretboard. Works for guitar, bass, mandolin, banjo, etc. An invaluable tool whether you're a professional luthier, tinker with repairs at home or any player interested in working on their own guitar. See our listings for new and used SGM guitar parts added daily.