With cross-grinding A-C short, right-hand cutting, with cylindrical shank, precision-ground twist drill in industrial quality for drilling alloyed and unalloyed steels, grey cast iron, malleable cast iron, copper alloy, nickel silver, graphite, sintered iron, wide flutes and reinforced core are the main features, this allows a drilling depth almost corresponding to the length of the twist and good chip removal, point angle 118°, surface blued from 1.0 mm, all dimensions from 4.0 mm with special grinding "AC", industrial quality suitable for NC machines, precise due to modern grinding process, breakage resistant due to CNC-controlled heat treatment