HSS-G W9 1,30mm bor
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…