This ready-to-run N Scale ACF 3-Bay Center Flow Covered Hopper with Round Hatches from Micro-Trains(R) is based on cars built from the 1960s into the 1990s making it ideal for your diesel-era freight into the 2020s. covered hoppers such as this are used for hauling grain, fertilizer and other bulk, granulated materials. This covered hopper features free-rolling Delrin(R) trucks with contoured axles, truck-mounted Magne-Matic(R) couplers and interior weights. Cars also include thin-profile foot stirrups, brake wheels and fine decoration. This ACF 3-Bay Center Flow Covered Hopper is one of many