From the Manufacturer:
All aboard for some railroad adventures! Eight wooden train cars, each approximately three inches long, link together with magnetic couplers in endless combinations for lots of imaginative play. Brightly painted and beautifully crafted train cars include a steam engine, caboose, coal car, passenger car, and more. This set is sized to play perfectly with Melissa & Doug activity rugs or on its own. Pieces all store neatly in the compartmentalized wooden tray.