1" BSPT

  1"  BSPT  Tap - Taper Threads.
  11 tpi Standard BSPT pitch
  108mm Overall, 35mm Cutting Length, 25mm Shank and 20mm Square Drive.
  6 Flutes, Centred Both Ends.
 
  Made by Warwick tools, Sheffield .
  Used but sharp and no visible damage to teeth.