Twist drill HSS - Maykestag DIN 338 RN 4.3 mm. This precision-ground twist drill features a short cross section A-C, right-hand cutting, and a cylindrical shank. It is designed for drilling alloyed and unalloyed steels, grey cast iron, malleable cast iron, copper alloys, nickel silver, graphite, and sintered iron. Key features include wide flutes and a reinforced core, allowing for a drilling depth nearly equal to the length of the twist and effective chip removal. The point angle is 118°, and the surface is blued from 1.0 mm. All dimensions from 4.0 mm come with special grinding "AC." This industrial-quality drill is suitable for NC machines, offering precision due to modern grinding processes and breakage resistance from CNC-controlled heat treatment.