Recommends it to the beginner

Are you interested in nanolock?

In this block, the height of the projection part is 4mm.
It is small surprisingly. :-0

If it is a volume because width, length, and height are halves of a usual block, it is 1/8.
Because it is difficult to assemble the block, it is written "For ages 12 and up".

A recommended item is mini collection series in the nanoblock beginner.

This series is from 80 to 180 pieces.
Therefore, the block can usually be assembled in about one hour.