YourToyTrains is proud of the Atlas Model brand we sell. Atlas HO Hopper Cars have an interesting feature you might want to check in to if you are new to model railroading. This Atlas HO Master 4650 CF Hopper Great Northern 171999 for an outstanding $29.95 is not alone. Atlas Model makes sister cars with Road Numbers: 171700, 171728, and 171829. We have seen many freght trains with cars with multiple Road Names- only the ROAD NUMBERS make them different. That's realism, in detail!