The first cutting edge can advantageously remove a large burr from the
edge of a drilled hole with high effectiveness, because of the
particularly aggressive cutting action of the first cutting edge. The
following inclined second cutting edge advantageously allows precise
chamfers to be cut, i.e., the surface and the angle of the counter bore
can be precisely maintained, independent of the wear on the cutting
edges. A control surface located adjacent to the cutting edge in the
forward region enables a precise control of the cutter.