... carbide, M2, M35, M42 and G15 2.Straight or spiral flute Basic component materials: HSS, cobalt high speed steel, carbide, M2 ... for processing are welcomeThread taps are always for the blind hole drilling in CNC machining centers, processing speed, high precision, ... chip better and neutral goodTogether in the processing of through-hole and blind holeVarious helix angle can deal with different materials ...