The Bachmann HO Scale Track King Train Set is an excellent entry into the hobby of model railroading. Headed by a powerful EMD GP40 locomotive decorated in Union Pacific's iconic Armour Yellow paint scheme, the Track King is ready to conquer any freight job it faces with the included tank car, boxcar, flatcar, and caboose, all with E-Z Mate(R) magnetic knuckle couplers. Set up your track, move freight, and start building your very own HO Scale railroading empire. The train rides on a 47 x 38" oval of E-Z Track.. Also includes a UL-listed power pack, speed controller and an illustrated instruction manual. The Track King is one of a variety of Bachmann HO Scale train sets.