The Walthers Trainline Rock Island "The Rock" 4 Bay Steel Coal Hopper is a ready-to-go model train car designed for HO gauge model railroads. Made of plastic and steel, this freight car features a Two-Rail System for smooth operation. Painted in the iconic Rock Island colors, this 1:87 scale model is perfect for transportation-themed layouts. The control system is analog, making it compatible with traditional model train controllers. A detailed addition to any model railroad collection, this coal hopper is a must-have for enthusiasts of vintage and modern trains alike.