Nanoblock is a collection of micro bricks designed and conceived in Japan. They measure barely 1/8 the size of a conventional building block. This makes nanoblockan incredibly small micro-building block for children from the age of 12 and of course for all adults. Unlike ordinary building blocks, nanoblock lets you build detailed miniature figures. nanoblock comes in different difficulty levels (levels 1-5). Contains over 150 parts.