Domino Rally Starter Set 60 multi-colored Zigzag tower with slalom ball Contains 60 Dominoes 1 Domino Bridge, 1 Slalom Ball And A Zig Zag Tower For Ages 6 And Up All Domino Rally Sets Work Together To Help Make The Biggest, Coolest Domino Creations You Can Imagine Kids engineer their own Domino Rally set-ups, making this a great STEM product