This product is a mixed lot of three HO scale model railroad cars, including a Cox flat car with crane, a Con-Cor hopper car, and an Ertl flat car. The cars are ready to go and pre-built, designed for a two-rail system. They are multicolor and themed around transportation, with a scale of 1:87 and gauge of HO. These model railroad cars have never been used and would make a great addition to any HO scale train layout.