Nanoblock is a micro sized building block that is just 1.8th the size of a standard building block. The smallest part is a mere 4x4x5mm! Double ridged backing makes the small size possible. Despite its micro size, Nanoblock is just as precise as a standard building block. Stimulating and entertaining for all construction enthusiasts in the family! The smaller it is, the more realistic it becomes! The smaller parts make it possible to create more detailed and even smaller models than what can be created with the standard building block.