... : HSS, cobalt high speed steel, carbide, M2, M35, M42 and G15 2.Straight or spiral flute Basic component materials: HSS ... , cobalt high speed steel, carbide, M2, M35, M42 and G15Straight or spiral fluteDIN376/371 or factory standardCoating wear life ... hole drilling in CNC machining centers, processing speed, high precision, chip better and neutral goodTogether in the processing of through-hole ...