6 piece set is made in the U.S.A., featuring 5 different types of files and a wire brush for a variety of uses. Small sizes aid in accessibility. Mill Bastard, for sharpening tools, single cut leaves a smooth finish. Round Bastard, for enlarging or rounding openings and for leaving a smooth finish. Slim Taper, triangular in shape, is often used for filing corners. Square Bastard, ideal for slots and keyways, file is double cut for fast stock removal. Flat Bastard, a workhouse file used for rapid stock removal. Set Contents: 4" Mill Bastard, 4" Round Bastard, 4" Slim Taper, 4" Square Bastard, 4" Flat Bastard Files with Handle; Wire Brush. Packaged in a pouch.