Trido magnetic building blogs come in just three basic shapes, yet create infinite possibilities. Each piece is magnetic on all sides, allowing limitless possibilities. The large set includes 36 pieces, which you can use to build a large construction or several smaller ones. Beautifully packaged in a presentation box. Large set includes: 6 octahedrons, 12 tetrahedrons, 12 half-tetrahedrons, 6 eyes (in total 36 pieces) + Leaflet + Limited Edition Inspiration Book.