This easy-to-build HO Scale USRA 2-Bay 55-Ton Open Hopper plastic car kit by Accurail features a one-piece body with details molded in place. Decorated models feature authentic paint and lettering schemes with end reporting marks. In addition, the trucks feature nonmagnetic axles, engineering plastic wheels and AccuMate(R) magnetic knuckle couplers. This twin-bay hopper kit is ideal for novice builders or seasoned modelers looking to expand their car fleets. The USRA Hopper is one of many Accurail hopper car kits.