The O Gauge 3-Rail Lionel 6-26673 BM Buttermilk Bay Flat Car #26673 w/ Milk Tank is a ready-to-go model train flat car made of plastic, measuring 10 inches in length. It features knuckle style couplers, metal trucks and wheels, and is painted in the factory. This three-rail system flat car, part of the Lionel brand, comes in its original box and is from the 2010s. Perfect for model railroads and train enthusiasts, this intricately detailed flat car adds a realistic touch to any collection.