Magformers Rainbow Opaque Solid (40-Pieces) Set Magnetic    Building      Blocks, Educational  Magnetic    Tiles Kit , Magnetic    Construction  STEM Toy Set 16 Triangles; 24 Squares Step-by-Step instruction booklet for Rainbow Solid Opaque Range Compatible with all MAGFORMERS shapes Neodymium Rare-Earth Magnets for guaranteed connectivity BPA Free HQABS Plastic