Magna-Tiles 3-D Magnetic Building Tiles are where math, science, and creativity meet. Each brightly colored, translucent shape is lined with magnets. The secret is the unique ability to attract; they always connect! Children develop fine motor skills and become familiar with shapes as they stack, make flat patterns, and build 3-D shapes and structures. The 48-piece deluxe set includes 12 Small Squares, 3 Large Squares, 9 Equilateral Triangles, 10 Right Triangles, 6 Isosceles Triangles, 1 Wheeled Chassis, 2 Imagination Pieces, 2 Hole-Punched Equilateral Triangles, 1 Arch, 1 Square Door Frame, and 1 Magnetic Door. Each shape measures 3" Clear Colors. Ages 3+.