Unleash big imagination with the Cyclone Quadrilla Marble Run, the largest set in the series! Featuring two spiraling funnels, 12 curved rails, and 10 accelerators, this deluxe STEM toy inspires kids to engineer endless marble run designs. A true toy store showstopper. • Largest Quadrilla marble run set with advanced building options. • Includes 2 spiraling funnels, 12 curved rails, and 10 accelerators. • Encourages STEM learning: problem-solving, creativity, and engineering skills. • Durable wooden design built for hours of repeat play. • Perfect hero item for toy stores, gift shops, and STEM-friendly retailers. • Ideal for ages 4+ and a standout gift for birthdays and holidays.