Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel: 00000000: 000000: 1/32 " TPG-322: 3/8 " ... Carbide Tapered Ball End Mills . Tapered Cut Style. These tools have a tapered profile and rounded cutting edge for making smooth contours on intricate, three-dimensional shapes.