Embark on an exciting adventure with this Quadrilla set. Escape from the castle's rotary tower via two transparent stairways. As marbles roll down the rail, they'll ring three hanging bells, offering a great STEM learning experience.

To use this set, simply place the marbles at the top of the transparent stairways. Watch as they roll down the rail and ring the three hanging bells. It's a fun and educational way to learn about STEM concepts. When you're done playing, store the set in a dry place to prevent damage. If the set gets dirty, you can clean it with a soft, dry cloth. Avoid using harsh chemicals or abrasive materials as they may scratch the transparent stairways.