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  • HSS-G W9 4,20 mm bor (orig.n. 19959)

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    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…