N Scale Ages: 14+ Atlas P/N: 2002 Two pieces of Code 55 N Scale 6" Straight Track. Features: Designed with precision and sophisticated technology. Prototypically-finer brown ties and nickel silver rail. This Code 55 track piece has the same reliability and durability as the Atlas Code 80 track. Rails are smaller than Atlas' traditional N scale Code 80 track. It's the ulimate in performance, reliability and realism.