CBTONE 20pcs Carbide Bur Set, 1/8" Shank, Double Cut, Tungsten Carbide Rotary Files Burrs for Woodworking, Engraving, Drilling, Carving Solid carbide burs are designed for cleaning out material in a wide-range of products including wood, plastics, stainless steel and other metals. Solid carbide burs have a long tool life and faster cutting speeds than other substrates. They are double-cut style and have rows of cutting teeth in two intersecting directions for fast material removal and a rougher finish. Carbide burs setcome in many shapes and sizes. Shapes include ball, cone, pointed, taper, tree and cylindrical. Specifications: Item: Carbide Bur Set Type: Double Cut Tool Material: Solid Tungsten Carbide Shank Diameter (In.): 1/8 inch Cutting head diameter: 1/8 inch Total length: 1-1/2 inch Number of Pieces: 20