The Math 20-3084-1 4-8-2 M-16 Mountain Steam Engine is a highly detailed O gauge steam locomotive model by MTH, perfect for model railroads enthusiasts. This locomotive is modeled after the Pennsylvania Railroad and features a 1:48 scale model, making it a realistic addition to any train set. With its intricate design and accurate representation of a classic steam engine, this locomotive is sure to be a standout piece in any collection. Tested everything works like it should