The Cyclone is the largest Quadrilla set. Two spiraling funnels, 12 curved rails and 10 power-boosting accelerators inspire builders to design the ultimate marble run. The Cyclone is a dizzying mishmash of curves, spirals and drops which will put your marbles through a whirlwind marble race. Quadrilla's The Cyclone can be combined seamlessly with Quadrilla's other marble run sets. All Quadrilla marble run sets are crafted with heirloom quality birch and rubber wood for long-lasting marble racing fun. inspire builders to design the ultimate marble run. Hape Toy finishes are all non-toxic, child safe and of the highest quality. Hape constructs their toys using FSC accredited wood products.