The company is headquartered in Sparks, MD. 6 Half Round Double Cut Smooth File - Boxed Double-cut teeth on the flat side for rapid removal of material Nicholson File 05158N American Pattern Half Round Smooth Cut Hand File... file Tools & Workshop Equipment Home & Garden new NICHOLSON 12166 American Patte Half-round shape has one round side and one flat side for use on curved and flat surfaces American pattern file for non-precision material removal Medium, also known as second cut, offers average material removal and finish quality. Fine, also known as smooth cut, provides the smoothest finish. Nicholson manufactures hand tools and power tool accessories. Hand files are used to remove material and smooth and shape workpieces. The Nicholson half-round hand file has one flat side with double-cut American pattern teeth and one curved side with single-cut American pattern teeth for use on flat and curved surfaces. Tang for use with an optional handle (sold separately) Medium Coarse File For Metal Crescent Nicholson 8" Flat Double Cut Bastard File - Boxed 03566NN Filing Tool American pattern files have three coarseness grades. It has double-cut American pattern teeth on the flat side for rapid material removal and single-cut teeth on the round side for finishing, sharpening, and deburring.