General Tools 707475 12-piece Chromium Alloy Steel Needle File Set is ideal for crafts persons, tool and die makers, hobbyists, watchmakers and jewelers. Made of high-quality chromium alloy steel, these files are great for a variety of finishing applications. This set includes 12 file sizes warding flat, round, 3-square, square, crossing, oval, half-round, knife, barrette, slitting, joint round edge and equaling mill. The set also comes with a Versa-Grip handle with a locking screw chuck that secures the file in the handle. All files have a length of 5-12 in. and 18 in. Dia shanks and they come packaged in a zippered case for convenient storage.