Burnerd Old Type 9"

  Genuine Burnerd Blanks.
  That's pre Pratt & Burnerd, Burnerd and Pratt Chucks. Very Old Chucks.
  7. 1/2" ,  8" and 9"    3 Jaw Scroll Chucks from Burnerd.
  9"  Type 58 from Pratt.  
 
  Please Double Check Dimensions in pic #2 and please ask for conformation of any measurements please.