M16X2 HX TFL BOTT HSSE-PM B-Semi Bottom -3 itch T405038 STFL NSI P HSS-e Taps .48mm 2.192 6.8 High-Performance Taps Victory Straight-Flute HSSE-PM Taps Through and Blind Hole o Coolant o Coolant N eutral/Straight lute