The Lionel 6-18598 NYC Alco RS-11 is a pre-built model of a diesel locomotive in 1:48 scale, designed for O gauge railroads. This black locomotive features a smoke unit, light and sound functions, and is part of the New York Central corporate roadname. Manufactured in 2001, this ready-to-go model is equipped with an analog control system and weighs 5 lbs. This collectible item by Lionel is perfect for model train enthusiasts aged 17 years and up, showcasing intricate details and high-quality construction with a mix of plastic and diecast materials.