We have 2 identical Ingersoll 761C080-03   Tool Holder Adaptor Cat 50 Shell Mill Holder 1-1/2" Projection 2-1/2" Pilot Arbor size. Pictures showing 1.0" wide  drive lugs and  4.0" diagonal  Bolt pattern (5/8NC bolts not included) and a Large mill support face of 6-7/8".  Pick one or not. Ask any questions  if needed.  We have a flat 29.99 shipping to lower 48 states. We do accept  returns  but buyer  is responsible for  shipping costs.