Description : 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 Acoustic Guitar-Light/Medium Strings. We even include a compact, strong aluminum case. That's Music Nomad quality - raising the bar in equipment care. Specification : Acoustic Guitar - Light/Medium Strings Nut File Set (.013 inch, .017 inch, .024 inch, .032 inch, .042 inch, .056 inch) with Industrial Strength Diamond Coating Comes in a Compact, Lightweight and Strong Aluminum Case: 3 inch x 6 inch x 1.4 inch