Concrete drill bit for rotary and impact drills according to DIN 8039, milled angle groove, straight spiral intake, long tool life, heat-resistant, carbide insert 130°, negative chamfer, robust version, Surface: shot blasted, Suitable for drilling in concrete, masonry, natural stone, 8 pieces in plastic storage case: Ø 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 mm