Put the laws of motion to the test with our patented Q-BA-MAZE 2.0 Stunt Sets. The ingenious pieces interlock in endless configurations, while double-exit cubes keep you guessing which way the marbles will go. The Starter Stunt Set features 56 cubes, 1 Speed Sprocket, 1 Roto Catcher, 15 steel marbles and instructions for plenty of super spinning action. Cubes and Stunts are made from phthalate-free and BPA-free ABS plastic • Marbles are nickel plated steel balls. They are not magnets.