DIN 338, right hand cut, type N, 5% Cobalt alloyed, precision ground, bronze colour. Tip angle 135 deg., cross-ground to DIN 1412 C, self centering, cylindrical, industrial quality, extreme heat resistance for difficult-to-work materials e.g. Steel and alloyed steel, stainless steel grades A2/ A4, cast iron and cast steel, bronze, plastics.