Selected tungsten vanadium steel quality. Practical and stable construction. Shank and milled part manufactured from one piece. Precisely ground teeth and optimum concentricity with simultaneous elasticity. Ideal for freehand work. For machining soft and hard wood, non-ferrous metals and precious metals as well as plastics and plaster. Shanks Ø 2.35 or 3.0 mm. Optimal for finishing, shaping, profiling and grooving. Optimum cutting speeds depend on the diameter of the respective cutter and the material to be machined. The larger the cutter, the lower the speed must be. The following applies to the material to be machined: soft material high speed, hard material low speed. The exception is plastic.