Atlas O 3-Rail 21st Century Track System(TM) track is designed to have the look of North American prototype trackage. Sections feature Code 148 solid nickel silver rail, blackened center rail, scale-sized ties with accurate tie plate, spike and bolt detail; a snap-lock system that securely holds the track sections together and ensures exact alignment and detailed rail joiners. The dark brown injection-molded tie strip has a special UV additive designed for both indoor and outdoor use. Perfect for use with all 3-rail O gauge trains. This track is part of the complete 3-rail and 2-rail AtlasO 21st Century Track System.