1/4-28 H3 F eft and piral lute-Right Hand ut LUG DIN Lenght/Ansi Shank HSS-e GT725019 T72_LHSF_DA_CAL GT72 eft and piral lute-Right Hand ut A Inch P HSS-e Taps .255″ 1.18″reach High-Performance Taps Victory eft-Hand Spiral-Flute HSS-e Taps Through Hole Right