Prototype: 3 Union Pacific Railroad (UP) type S-40-12 livestock cars. Design with bilevel floor. Model: Metal frame and detailed floor. Sliding doors that can be opened. Brake system, steps, ladders, grab irons, and other details separately applied. Cars come with different car numbers. Detailed trucks, American RP 25 wheel sets. Cars come with NEM coupler pockets and close coupler mechanism, couplers compatible with the Kadee system. Length over the couplers 467 mm / 18-3/8".