- Metal Wheels and Axles - Die-Cast 4-Wheel Trucks - Operating Die-Cast Metal Couplers - Colorful, Attractive Paint Schemes - Decorative Brake Wheels - Fast-Angle Wheel Sets - Needle-Point Axles - Die-Cast Metal Body - Unit Measures:13 x 2 1/4 x 1 3/4 - Operates On O-31 Curves