M42X4.5 H HSF 76 H HSS-e P6520 B-Semi Bottom -3 itch T315032 0105017 SF P HSS-e Taps .2598mm H2 00 High-Performance Taps Victory Spiral-Flute HSSE-PM Taps Blind Hole mPVD oncentric xial Coolant oncentric xial Coolant Thru- Coolant-Yes Right Hand Helix/Flute