The Lionel 6-18903 O Amtrak Alco A Diesel Locomotive #8903 EX is a model train locomotive designed for model railroads. This silver-colored locomotive features a light function and is painted in detail. With a scale of 1:48, it is suitable for hobbyists aged 17 years and up who enjoy collecting and operating model trains. This locomotive is part of the Lionel brand's product line, known for its quality and accuracy in replicating real-life trains.