Rectangular shape for sharpening mill or circular saws and draw filing, with tapered width to ease access into grooves American pattern file for non-precision material removal Single-cut teeth on sides and edges for sharpening and deburring Square edges for filing sharp corners Tang for use with an optional handle (sold separately) Rectangular shape with single cut on sides and edges. Rectangular shape Two square edges, single cut in sides and edges 12" long, tapers slightly in width