Ground precision drill with point thinning for drilling steel Precision twist drill HSS with straight shank, type N, right-hand cutting, DIN 338, HSS, ground Application area: Precision drill for drilling steel up to 1,000 N/mm² and cast steel (alloyed and non-alloyed), grey cast iron, malleable cast iron, spheroidal cast iron, sintered iron, nickel silver and graphite. Composition of set: 6.0–10.0 mm Advice: Shaft end from ø 13.25 mm twisted off to ø 12.7 mm.