Magformers Window Plus 20 Piece SetDiscover Magformers always attracting technology and build a cube, small house and small magic ball with the Window Plus 20Pc set. A great introductory set for budding builders to learn Magformers pull up tricks and begin constructing in 3D. Perfect for STEM education and learning. Build with 8 triangles, 6 regular squares and 6 window squares. Each geometric shape contains magnets that never reject, so youll always hear the Magformers click. When