HSS-G ground drill bit, complies with DIN 338, RN, the drill bit is made of high-quality high-speed steel (HSS), the steel is tempered with alloys - Tungsten 9%, Molybdenum 3%, Chrome 4%, Vanadium 1% - for drilling steels up to 900 N / mm. Precise grinding of the helix for maximum performance, accuracy and good centering, grinding of the drill tip angle 135 °, designed for industrial use. Packaging-plastic box [***]