You dont have to be an engineer to create with nanoblock. With these micro-sized building blocks, 3D buildings are constructed like never before. Watch in amazement as buildings are erected to even the tiniest detail. Watch as Japan's Kiminarimon, as known as Thunder Gate, take shapes beneath your hands with over 450 assorted size and colored pieces. Finished size 3.75"h x 3"w x 3"d. Includes detailed color instructions. Not designed for children under age 8.