HSS 4241 8,90mm bor
Powerful HSS drill meets DIN 338, RN, the drill is made of high quality high speed steel (HSS), the steel is tempered with alloys – Tungsten 4%, Molybdenum 2%, Chrome 4%, Vanadium 1% – for drilling steels up to 900 N / mm. Precisely manufactured helix for maximum performance, accuracy and good centering, grinding angle…