Ertl Big Farm Peterbilt Model 579 Semi with John Deere 4 Wheel Drive Tractor Highly detailed Features a detachable lowboy trailer with removable arm and fold down ramps for easy loading and unloading of the tractor 1:32 Scale Big Farm Peterbilt Model 579 Semi with John Deere 4 Wheel Drive Tractor Official John Deere and Peterbilt Licensed Products Ages 3 years and up