Marble Genius Marble Run Booster Set – 20 Pieces Total (Marbles Not Included), Construction Building Blocks Toys for Ages 3 and Above, with Instruction App Access, Add-On Set, Primary

Make sure this fits by entering your model number.
2LBS OF SHIMMERING KINETIC SAND FOR KIDS: With 2lbs of Crystal Pink sand that sparkles and shines, you can mix, mold, squish, cut, create sand art and more! The iridescent resealable bag is great for storage.
8 translucent pieces to enhance the playability of your existing marble run.
2 swings & 2 catches that move the marbles through the air.
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