The Athearn 3020 Baltimore & Ohio F7B Dummy Locomotive in HO scale is a vintage model train engine made of plastic, designed for analog control on a two-rail system. Standing at 2 inches tall, this locomotive features a Bo-Bo wheel configuration and is painted to resemble the iconic Baltimore & Ohio railroad. Perfect for collectors and hobbyists aged 17 years and up, this ready-to-go pre-built model is a detailed replica of a classic locomotive from the transportation theme, making it a valuable addition to any model railroad collection.