This ready-to-run N Scale 3-Dome Tank Car from Micro-Trains(R) is based on cars built beginning in the 1920s. They were used into the 1970s. Models include free-rolling Delrin(R) trucks with contoured axles, truck-mounted Magne-Matic(R) couplers and diecast metal underframes or interior weights. Cars also include thin-profile foot stirrups, brake wheels and fine decoration.