A perfect way to start in HO model railroading! Atlas’ Grand Valley Track Pack was designed for Woodland Scenic’s Grand Valley Layout Kit. It contains all the HO Code 83 (brown ties and nickel silver rail) switches, bridges and rail joiners needed to create the 4 foot by 8 foot layout. Atlas Code 83 line is fine quality, prototypical track for the modeler who is looking for track that is more exact-to-scale than Code 100.