The HO Walthers ACF Centerflow 4-Bay Covered Hopper in Dry Branch Kaolin livery is a ready-to-go model designed by Walthers. Made of plastic and painted in gray color, this 1:87 scale replica of the ACF Centerflow Covered Hopper is perfect for model railroading enthusiasts. With features like a two-rail system and a transportation theme, this freight car is a great addition to any HO scale railway layout.