Maximum safety thanks to the optimal symmetrical head geometry with 4 solid carbide cutters that do not get caught during reinforcement. Up to Ø 10 mm: featuring an innovative welded solid carbide head for maximum service life and greater dust removal for the highest drilling speed. Power switches cause micro-cracks in the material, resulting in a noticeably faster drilling progress. Low-vibration drilling with a 4-flute spiral. Two large-volume helices quickly and reliably remove drilling dust from the borehole, while two reinforced spirals provide additional safety and stability. Very long service life for up to 50% more dowel-compatible round holes in a robust plastic case, Ø 5 x 110 mm; 6 x 110 mm; 8 x 110 mm; 6 x 160 mm; 8 x 160 mm; 10 x 160 mm; 12 x 160 mm.