18' Low Side Gondola Car (2-per box) - US QUARTERMASTER #121235 & #121247 - GREEN - On30 Scale. The Spectrum 18' freight cars are the perfect addition to your 2-6-2T Class 10 Trench Steam Engine. This On30 rolling stock arrives in a variety of road numbers with prototypical paint schemes and is finely detailed from the proportional brake wheel to the individual handrails. Each car features blackened machined-metal wheels, magnetically operated, body-mounted E-Z Mate Mark II couplers, blackened-brass axles with needlepoint bearings, Celcon trucks, and added weight for optimum tracking. Features: Spectrum quality - fully assembled rolling stock 18' prototypical design Highly detailed body with separately applied parts Performs best on 18" radius curves or greater On30 Scale - O Scale narrow-gauge model that runs on HO track Product Measurements: L 10.75 in., W 1.75 in., H 1.5 in. Retail Package Measurements: L 12 in., W 3 in., H 5.2 in. UPC: 022899265346