M3X0.5 HX TFL BOTT HSSE-PM B-Semi Bottom -3 itch T405030 STFL NSI P HSS-e Taps .141mm .581 9.3 High-Performance Taps Victory Straight-Flute HSSE-PM Taps Through and Blind Hole o Coolant o Coolant N eutral/Straight lute