Combine magnetic tiles with see-through pipeline pieces and watch marbles roll through your custom space station. The 68-piece DIY set includes squares, triangles, arches, slide ramps, U-bend pipes, marble balls, astronaut and rocket figurines, a sticker sheet and a manual full of build ideas. Strong magnets, vivid colors and infinite combinations make this a long-favorite STEM toy. Develops spatial reasoning, cause-and-effect thinking and creativity. Ages 3+.