This lot includes an Athearn & Atlas DCC engine and multiple coal cars in the HO scale. The corporate roadnames featured are Great Northern and 8- Peabody. The material used in construction is plastic and the color is multicolor. This set is perfect for anyone interested in model railroads and trains, and it would make a great addition to any collection. Coal cars have plastic wheels, coal loads with Kadee couplers. Coal cars are duplicate numbers. Just making the buyer aware. They may need to be renumbered if its an issue. Great Northern Atlas engine has Tsunami decoder. Not sure if it is Tsunami 1 or 2. Sounds convincing with good quality speaker. Turbo sounds great.  Engine runs on decoder # 182 or what is numbered on engine. All parts in tact before shipping.