Rounding out the Techno Gears Marble Mania Mini Series, the Zoomerang set includes over 100 pieces to build and create your own marble and gear run. Once completed, the corkscrew marble lifter can be cranked to elevate the marble to the top of the build where the track and the fun begins. Ages 6+ years. More than 100 colorful construction pieces Marble lifter Mini build for introduction to TGMM line of marble construction sets Interlocking plates, 3-D connectors and tracks Challenges problem solving skills Expands knowledge of mechanics and engineering Inspires creativity Builds confidence as children design structures that move and work