The Lionel 6-29603 COMET SINGLE-DOME TANK CAR is a model train freight car designed for O scale model railroads. This tank car, manufactured by Lionel, features a single dome design and is perfect for hobbyists and collectors looking to enhance their model railroad layout with a realistic and detailed piece. The tank car is a new addition to the Lionel product line, offering enthusiasts a high-quality and authentic addition to their collection.