Intricately Detailed, Durable ABS Body Colorful, Attractive Paint Scheme Metal Wheels and Axles Die-Cast 4-Wheel Trucks Fast-Angle Wheel Sets Needle-Point Axles(2) Operating Die-Cast Metal Couplers O Scale Kadee-Compatible Coupler Mounting Pads 1:48 Scale Dimensions Unit Measures: 19 7/8" x 2 3/4" x 4 3/16" Operates On O-54 Curves