AN INTERCHANGEABLE TOOL FOR A DRILL COMPRISING ANNULAR CUTTER. THE CUTTER HAS A HIGHLY ADVANCED DOUBLE EDGED TOOTH OF HIGH SPEED STEEL WHICH CREATES A TRUE DOUBLE POSITIVE CUTTING ACTION AT THE HOLE AND SLUG DIAMETERS. DURING EACH REVOLUTION 4 TO 16 CUTTING EDGES ARE AT WORK REMOVING METAL WHICH IS SWEPT AWAY AND UPWARD FROM THE CUTTING EDGES AND EXITS VIA THE GROUND SPIRAL FLUTING.

CLASSIFICATION IS DETERMINED ACCORDING TO GIRS 1 AND 6 CN 82075060 OF HIGH SPEED STEEL CHAPTER 82 NOTE 2.