6 Pieces of N Code 55 Track pieces to create a 11.25" Radius Half Curve. 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! Transition joiners are included.