The Rail King MTH Trains C&O Allegheny 2-6-6-6 Articulated Steam Engine #20-1117LP is a black O gauge steam locomotive model featuring a 2-6-6-6 wheel configuration. Made of cast iron, this model is designed for transportation enthusiasts and collectors. It includes a smoke unit feature, adding to its realistic appearance. This AC-powered locomotive is a premium factory-new item by MTH, ideal for those interested in model railroads and trains.