Industrial quality for drilling materials that have high hardness and tensile strength such as cast iron, bronze, hardened steel and stainless steel. Thick core for increased rigidity in hard materials. Precision engineered parallel shank for accurate hole size. Made from HSS Co. 5% Cobalt formula improves abrasive and heat resistance, for increased strength at higher cutting temperatures. Colour Tempered surface finish enables identification of cobalt tool material. 135° Split point enables accurate positioning and less drilling pressure. 8.0m Diameter. 75 Flute length.