Magformers Rainbow Opaque Solid Set (30-pieces) Basic Magnetic    Building      Blocks, Educational  Magnetic    Tiles Kit , Magnetic    Construction  STEM Set 12 Triangles; 18 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