WalthersProto HO Scale Type 2411 Heavyweight 6-Wheel Passenger Trucks are designed especially for all-steel heavyweight cars. Trucks of this type were used from the 1920s until the cars were retired. Designed especially for the Walthers (932-series) Heavyweight 8-1-2 Sleeper, Diner and Coach (all out of production), but adptable to many other models, these WalthersProto HO trucks are fully assembled with built-in electrical contacts for car lighting and 36′ turned metal RP-25 wheels. Heavyweight 6-Wheel Passenger Trucks are part of the extensive line of WalthersProto HO Scale trucks, wheels and couplers. High quality turned metal RP-25 wheels for improved performance Easy replacement for Walthers Heavyweight Passenger Cars Great upgrade for heavyweight cars from other makers Ultra-smooth rolling needlepoint axles Fully-assembled and ready to use 1 pair of trucks