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