MARTIN IS OFFERING THIS 2018 JOHN DEERE 712FC. THE CORN HEAD IS LOCATED AT OUR KEWANEE LOCATION AND CAN BE SERVICED BY OUR JOHN DEERE FACTORY TRAINED SERVICE DEPARTMENT. SOME OF THE MAIN OPTIONS INCLUDED ON THIS CORN HEAD INCLUDES THE FOLLOWING: 30" SPACING, INTERMESHING KNIFE ROLLS, ROW SENSE SENSORS