4" - 100mm Chuck.

  Set of Hard External Jaws for 100mm / 4"  Pratt Burnerd Scroll Chuck
  Standard / Griptru Chuck  (Pre Metric)
 
  Original Set with Matching serial numbers
  Please check dimensions in pictures.
Damage free, but have been slightly rusted. All pictured and would clean up more, shouldn't affect the use.
  Sensibly priced due to this.