Application: - High speed cutting (HSC) solid carbide twist drill with and without interior cooling for steel, stainless steel, aluminum, cast iron - High hard cutting (HHC) solid carbide twist drill for the hard machining up to 70 hrc. - High speed cutting (HSC) solid carbide subland twist drill for machining in steel. - High speed cutting (HSC) solid carbide twist drill with and without interior cooling for machining steel starting from 0,1 mm