WARNING: These files cut really well! Music Nomad’s patent pending Nut Files feature a revolutionary diamond coating & round “string-shape” blade design resulting in smooth, precision cuts. They cut & polish slots at the same time & do not drift like common toothed files. The industrial, even diamond coating cuts all nut or saddle materials such as nylon, bone, graphite & even metals such as brass & zinc. We added an ergonomic handle for total comfort & control of your cut, or you can remove the blade from the handle as an alternative cutting option. This custom set comes with 6 Nut File sizes for Electric Guitar-Light Strings. We even include a compact, strong aluminum case. That’s Music Nomad quality – raising the bar in equipment care.