Hand Tap, Bottom, General Purpose, High Speed Steel, Plain Finish, 4 Flutes, Size 8MM, Pitch 1.25MM, Thread Length 1 1/8 In, Overall Length 2 23/32 In, 1-2 Pitches, Pitch Diameter Limits D5, Shank Dia 0.318 In, Use with Machine or Tap Wrench For Inside Thread Producing, ANSI Standards