Ingersoll Rand Model 66 Electric Impact W Sockets & Accessories / Case.  I plugged it in an tested it.  I am no tool expert but it seemed to function well.  It comes with 8 sockets and an attachment to go from the 5/8 to 1/2.  The unit has scratches all over the chrome surface.  Check out the photos for condition and see exactly what you are getting. 

Sockets

  1. Proto 13/16 7626H Dyna Ring
  2. Proto 7623H Dyna Ring
  3. Proto 7428H 7/8 Dyna Ring
  4. Proto 1 1/8 7636H Dyna Ring
  5. Proto 7420H 5/8
  6. MAC VI 246 3/4
  7. Williams USA A 4-626 13/16
  8. K & Decker 22780 13/16
  9. Apex EX 505 1/2
Other Tools
  1. Jacobs K440N Machinist Wrenches X2