HSS-G ground drill, meets the DIN 338, RN standard, the drill is made of high-quality high-speed steel (HSS), the steel is refined with alloys - Tungsten 9%, Molybdenum 3%, Chromium 4%, Vanadium 1% - for drilling steels up to 900 N/mm. Precision helix grinding for maximum performance, precision and good centering, 135° drill tip angle grinding, designed for industrial use. Packaging-plastic box