THIS CAR IS REPRESENATIVE OF FLAT CARS THAT WERE MODIFIED TO TRANSPORT WHEELSETS. IT INCLUDES OUR 4021 FLAT CAR KIT ALONG WITH THE SLOTTED I BEAMS AND 40 SCALE WHEELSETS. ERA IS 1930 TO PRESENT. INJECTION MOLDED IN GRAY STYRENE FOR THE CAR AND RUST STYRENE FOR THE BEAMS AND WHEELSETS. INCLUDES TRUCKS.