The Atlas Classic HO Scale ALCO RS-1 Locomotive in New Haven #0661 is a pre-built model made of plastic, designed for enthusiasts aged 17 and up. This 1:87 scale diesel locomotive operates on a DC power type and features a Bo-Bo wheel configuration. With an analog control system and two-rail system, this locomotive is perfect for model railroads and train enthusiasts looking to add a realistic piece of transportation history to their collection. Standing at 2 inches tall, this locomotive is a ready-to-go item that captures the essence of the New Haven railroad. brand new off the shelf our family hobby shop just closed