Quadrilla Double-Sided Spiral Twist Marble Run. 9pcs.

Spin the Quadrilla set twice with this awesome double-sided spiral twister. Both the concave and convex sides feature spiral tracks that double the fun. Playing Tips When the concave side of the spiral twister is facing up, marbles roll from the arm into the outer ring and then quickly down to the center. With the convex side facing up, the rolling speed of the marbles is reversed. A marble placed in the center will quickly roll from the center to the outer ring and the arm. Features • Double-sided spiral twister • Both sides of the twister can be used, doubling the fun • Marbles roll inward on the concave side and outward on the convex side • Set includes one double-sided spiral twister, three wooden divider blocks, one gate plug, one accelerator, two stabilizer rings and two height adjusters, eight marbles • German-engineered design inspired by the Da Vinci circles • Helps develop spatial thinking and basic principles of science, technology, engineering and mathematics (STEM) • Hailed by The Wall Street Journal as the perfect toy to teach kids how to code • Compatible with all Hape Quadrilla sets • For ages 4-99