2012 POLAR Aluminum Pneumatic Tanker, 42 Ft. Long, 1,040 Cubic Ft. Capacity, 1 Compartment, Aluminum Frame, Rear Discharge, 4 Inch Piping, 3 Manholes, Pressure Manhole, 3 Hoppers, Front And Rear Aluminum Fenders, Hose Tube, Air Ride Suspension, 11R22.5 Aluminum Disc Wheels.