Marble Genius Sky High Circles - Marble Run Accessory Add-On Set (6 Pieces)
- 6 Round 'n Round pieces including 2 Round 'n Round's increase the fun and overall playability of your existing marble run toy..
- 4 Round 'n Round Topper pieces allow you to increase the stability and complexity of the marble runs you build..
- Standard toy size marbles (5/8 inch or smaller) work with this set (no marbles included with this set)..
- Compatible with Marbulous Marble Run Toys including our Marble Genius Marble Run Starter Set (60 pc.), Super Set (85 pc.), Extreme Set (125 pc.), & 8 Accessory Sets..