I just got a 10” 4 jaw Bison on eBay, man, these are nice chucks! Mine was A2, bolted right up to the Takisawa, $595 plus shipping. I frequently seem to outsmart myself…I offered $475 on your chuck, listed at $500. Seller turned it down, then my friend got it for the asking price. Thus, I got my 4jaw for only $100 more than if I had not tried to save $25.