Pokemon Center 2019 Nano Block Zapdos Figure. Nano Blocks are like mini size Lego blocks, but smaller pieces. The smallest block is only 4mm x 4mm x 5mm. Because they are very small blocks, you can create more detail. The set contains 240 small blocks that you put together to make Zapdos (or other things if you want). When it is put together, the figures in this series are approximately 1-2" tall (2.5-5cm), but vary by figure.