Magformers Basic Plus 30 SetThis set contains 4 circles, 4 squares with circle inners, 12 squares and 10 triangles. Use the power of magnets and your imagination to create unique structures with the Magformers magnetic building panels. It has intelligent magnet technology that allows tiles to lock and unlock at your command. Every piece contains strong neodymium magnets safely sealed in every edge, but because the magnets freely rotate, they always connect and never repel when