HO Scale. Dome passenger cars gained popularity in the late 1940s across the United States. The dome car features a glass dome on top of the car where passengers can rids and see in all directions around the train. They are often used as coach cars lounge cars and observation cars. Bachmann Dome Cars features detailed lighted interiors undercarriage detail blackened metal wheels body mounted couplers E-Z Mate Mark II couplers non-magnetic axles and they Performs best on 22″ radius curves or greater. Features Silver Series Rolling Stock Fully Assembled Passenger Car Lighted Interior Highly Detailed Painted Bodies with Precision Graphics (where applicable) Machined Metal Wheels with RP 25 Contours Magnetically Operated E-Z Mate Couplers Non-magnetic Blackened Brass Axles with Needle-point Bearings Celcon Trucks Preforms Best on 22″ Radius Curves or Greater HO Scale 187 Product Measurements L 12.25 in. W 1.5 in. H 2 in.