Pratt 9" All Steel Chuck

Set of hard jaws to fit Pratt 230mm / 9" All Steel Type 78 3 Jaw Scroll Chuck
  Pre Pratt & Burnerd Chuck.
 
  These are old but great condition, please see pictures, no damage grooves or scroll teeth.
  Original set with matching serial numbers.
  Been out of production for many many years and very difficult to find.