A marble marvel for any constructive kid, the Quadrilla Twist and Rail Marble Run Toy is all about twists, turns, rails and marble "roads!" The Quadrilla Twist and Rail Marble Run Toy, like other Quadrilla marble run sets, have put a new spin on marble runs with fun wooden tracks, rainbow blocks, and open-ended construction possibilities. The Quadrilla Twist and Rail Marble Run Toy comes with 147 pieces to make a marble run beyond compare, including curved tracks, a fantastic funnel piece, colored blocks in a variety of colors, rings, and 50 marbles for racing to the sun goes down! Not only will the Quadrilla Twist and Rail Marble Run Toy lead to colorful, creative constructions, but the marbles will be flying down the tracks so fast, it will make kids' heads spin!