LHT-S-5503U O Gauge Class 55xx 2-6-2 Shirtbutton GWR Green UnnumberedFeatures Include: Die cast metal chassis and cylinders with working vacuum pump Die cast wheels with steel tyres Brake shoes in ABS plastic Two styles of sand boxes in ABS 5 pole skew wound precision motor Helical gearbox Sprung driving wheel and pony trucks Front and rear pony wheel trucks to operate on a cam system to allow the model to traverse R2 (40. 5 radius) curves Die cast pivoted coupling and connecting rods, plated then blackened The