FAO Schwarz Marble Run Construction

Educational building fun action-packed STEM toy that brings on the twists and turns of a roller coaster with engineering. Your child can devise customized run designs by connecting gears, tunnels, and tracks to send steel marbles down the course! Endless customization Children can use the gears, tracks, pipes, and connectors to create their very own marvels of science and machinery! Sturdy, durable gears/tunnels/tracks for endless course designs Battery operated for automatic function.