MTH PREMIER BALTIMORE & OHIO. 4 CAR 60′ 15 ALUMINUM PASSENGER SET. O GAUGE 3 RAIL. Comes in original box. Metal Wheels and Axles – Overhead Interior Lighting – Die-Cast 4-Wheel Trucks – Fast-Angle Wheel Sets – Needle-Point Axles – 1:48 Scale Dimensions – Detailed Car Undercarriage – Sliding Baggage Car Doors – Unit Measures:15 EACH CAR- Operates On O-31 Curves.