MN Falcon
Well-known member
That was used by early orthopedic surgeons to ream out the hip for the new joint 
http://www.ebay.com/itm/SEXAUER-FLU...311?pt=LH_DefaultDomain_0&hash=item35b43e63a7
size is different, but the tool is the same...different kind of valve.
Steam valve seat former...
....and it's still 3 hours to midnight for the dude in Mukilteo.
Actually that is right. you had it earlier, but I thought it was for reconditioning quarter turn Ball valve seats. (Very large ones!)
WINNER!