This is nothing fancy, but it is a proposed production part - This is 1/2 of a "Skid Steer Attachment" Adpater Plate.
This Adpater Plate will allow a Kubota Tractor to use Skid Steer ( or Bobcat ) Attachments ( for more info, google for "Skid Steer Attachments" ).
With AC3D it is extreamly easy to create production mockups - thanks Andy!