1. 1/2" BSP

1. 1/2"  BSP  Tap.
 
  11 tpi Standard BSP pitch
  106mm Overall, 45mm Cutting Length, 38mm Shank and 28mm Square Drive.
  6 Flutes, Centred Both Ends.
 
  Manufactered in UK by FBT, Firth Brown Tools Ltd.   
  Used but sharp and no visible damage to teeth, but
  it does look like its been re ground at some point, professionally shop machine ground. See pictues.
  Shouldn't effect the use, but sensibly priced due to this.