Series T100 HSS taper shank drills are designed to drill steels with a tensile strength up to 1.000 N/mm2 as well as cast steel, grey cast iron, malleable cast iron, nickel brass and graphite. Features and Benefits HSS for excellent tool durability Oxidised finish for excellent heat and wear resistance Designed to drill steels with a tensile strength up to 1.000 N/mm2 Standards Manufacturing Standard: DIN 345