Brand New Erix (Sweden) Back Spotfacing Tool Spindle for Inside Hole Chamfering, Coolant Through, Part Number 27-34.1-CS31.8.

Purchased at a freight liquidation earlier this year.  Has two carbide wear pads on the underside of the toolholder.  The manufacturer's catalog is located at:

http://www.erixtool.com/ catalog/cataloginchusa.pdf

According to the calipers:

Overall length:  12.5"

Shank diameter:  1.244" / 31.60 MM