Thomas and Friends - NARROW GAUGE SKARLOEY (diecast construction) - Runs on N Scale Track. Narrow Gauge Thomas & Friends products are HO models that run on N scale track. Running from the main line at Crovans Gate to the Blue Mountain slate quarry, the Narrow Gauge Skarloey Railway provides important transport for Sodor Mining. Model features die-cast construction. Performs best on 11.25" radius curves or greater.