200mm Chuck.

Genuine Bison Original Manufactured. (Not Generic Unbranded Metric Jaws)
  Will also fit Toolmex and HDC Chucks.
 
  Minimum use (if any)  and absolutely pristine 
  Original set with matching serial numbers.
  Unfortunalty these have been a little rusted, won't affect the use, but sensibly priced due to this.
  See pictures for full dimensions.