Curved tooth pattern, Super Shear files A double purpose milled curved tooth file Different and exclusive with Nicholson® Rectangular shape, curved cut Teeth cut in an off center arc to permit fast cutting Wide industrial usage on flat and convex surfaces Such as aluminum, brass, babbitt, bronze, copper, magnesium Iron, annealed steel, soft metal alloys, plastics, hard rubber, hardwood Smooths as it roughs No. teeth per inch: 12; Cut: Standard