Proxxon 27116 Milling CuttersProduct Features These double flute cutters are made from solid tungsten and are to be used for clockwise cutting. The fishtail profile ensures cutting to the center, allowing boring. Usable on cast iron, hardened cast iron, steel, cast steel, brass, aluminum, and even glass, plastics and carbon fiber. The set includes one each of 1/32, 5/64 and 7/64 (1.0, 2.0 and 3.0mm) shank diameter: 7/64 (3.0mm) .
Not good enough. :( I thought that Proxxon 27116 1/32-Inch 5/64-Inch 7/64-Inch Milling Cutter 3-Piece by is one of the best on the market, but I am very disappointed.