Mack EM7 6 Cylinder Diesel 300 hp Engine, Air Conditioner, Mack Manual Transmission, 20000 lb Front Axle, 44000 lb Rears, 425/65R22.5 Front Tires, 11R22.5 Rear Tires, Air Lift Tag Axle, Camelback Spring Suspension, 226 in Wheelbase, PTO, McNeilus 10.5 cyd Mixer Unit, 3 Removable Chutes