SL302F 30 Yards Code 55 Nickle Silver Flexible Track with Concrete Sleepers (30 Pieces Boxed)This track models the most common form of concrete sleepering in use in Britain today, with flat bottom rail. PECO Streamline N Gauge Code 55 Universal Fine trackage system Despite a low visible rail height of just 1. 4mm, all brands of N Gauge model locomotives will run on this track. The ingenious rail section of PECO 55 combines strength and durability with a highly realistic appearance and uses the same universal rail joiners as Code 80. This