M42X4.5 HX HSF LNG H SSEGP6520 B-Semi Bottom -3 itch T315021 t315016r00_CAL GT31-XL HSF 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