Three of the most popular file shapes in one convenient handle: Square, flat, and round. The Multi File offers a range of options from utility grinding to tool sharpening and finish sanding. This is a great tool for tool makers, craftsmen, do-it-yourselfers and maintenance professionals. Square blade for right angles, slots and key ways. Flat blade for cutting faces and edges, utility work and tool sharpening. Round blade for enlarging and elongating round holes, or for use on curves. All blades made of high-grade tool steel. Handle doubles as a protective storage case when files not in use. Square blade offers fast removal of material with rougher finish. Flat and round blades offer finer filing for smooth surface finish.