M6X1 H5 Left Hand Spiral Flute-Right Hand Cut PLUG HSSE-PM GT605512 T60_ANSI_Plug_mm_CAL T-TI T-Ti NSI Metric plug  HSSE-PM Taps .255″ 1.01″reach 3.4″oal High-Performance Taps Victory Left-Hand Spiral-Flute HSSE-PM Taps Through Hole Left Hand Helix/Flute Right hand cut