HSS Twist Drill Cobalt 4 mm 2 pcs. 230080/CO

Blade angle 118°, helix angle 25 - 35°, tolerance Ø h 8, high-speed steel with increased cutting efficiency; for drilling alloyed and unalloyed steels and steels up to approx. 900 N/mm², gray cast iron, malleable cast iron, ductile iron, sintered iron, high nickel brass, graphite, short-chipping aluminum alloys, die casting, bronze, malleable brass (230080/CO).