Usra 55-ton 2-bay hopper car - Pre #705934 (Tuscan red) - N scale. The Ursa 55-ton 2-bay hoppers were designed to carry heavy loads like coal, and were used by many railroads. These mighty work-horse hoppers look great on any model railroad layout. The Bachmann 55 Ton 2-bay hoppers feature; NMRA profile metal wheels, needle-point axles, and body-mounted e-z Mate mark II couplers