The MTH 30-79710, a Crane Tender Car in 'Great Northern' livery, is an O Gauge model with O-27 scale. It boasts an Intricately Detailed, Durable ABS Body, Metal Wheels and Axles, Die-Cast 4-Wheel Trucks, Fast-Angle Wheel Sets, Needle-Point Axles, (2) Operating Die-Cast Metal Couplers, Operating Interior Lighting, Detailed Brake Wheel, Near-Scale Proportions, and measures 11 1/2" x 2 5/16" x 4". It functions on O-27 curves.