- 4 translucent bases to enhance the stability and playability of your existing marble run
- Racer base measuring 5.25 inches is our largest base and holds ~28 marbles.
- Solid plastic pieces provide an important foundation for your existing marble run.
- Compatible with Marbulous Marble Run Toys, including our Marble Genius Marble Run Super Set (85 pc.), Extreme Set (125 pc.), & Accessory Sets.
- Standard toy size marbles (5/8 inch or smaller) work with this set (no marbles included with this set).