The 71-piece marble run building blocks are equipped with 10 distinctive parts in multiple quantities including columns, slopes, 2 x centrifugal funnels, u-turn, and many others to allow designs of multi-layer 3D tall maze race track structure. The colorful, translucent magnetic building tiles are great for preschool, pretend play, group activity, classroom teamwork, kindergarten and more! At PicassoTiles, we strive to help children build a foundation on core fundamentals such as the basics of physics, aptitude in mechanics, building, architecture, and teamwork.