Magformers Magnets in Motion Set (61-pieces) Magnetic    Building      Blocks, Educational  Magnetic    Tiles Kit , Magnetic    Construction  STEM gear Set Build even bigger gear creations with 7 different geometric shapes and gear accessories. Add Movement to any Set! Neodymium Rare-Earth Magnets for guaranteed connectivity. ABS plastic magnets conform to CE, ASTM, and EN89 Compatible with all shapes and accessories. ABS plastic magnets conform to CE, ASTM and EN71 Large Gear Set lets you build bigger and better Add Movement to any Magformers Set! Engineer dozens of crazy contraptions!