Spiral drill bit made of high-grade high-speed steel according to DIN 338, roll-milled, cylindrical, right-hand cutting, type N Cone-shaped shell polished surface 118°, diameter tolerance h8 Black surface Suitable for drilling in steel, non-ferrous metals, alloyed and non-alloyed cast steel. Up to 900 N/mm2 tensile strength. Characteristics Priemer 1,6 mm Celková dĺžka 43 mm Pracovná dĺžka: 20 mm Balenie: po 10ks