Nanoblock 290 piece London Underground model. Build your very own mini London starting with this replica Underground Station Nanoblock is a microsized building block. The smallest bricks are just 4x4mm enabling models to be made in intricate detail. This amazingly small micro sized block makes it possible to create more detailed & even smaller projects than what can be made with standard sized blocks.
CHOKING HAZARD - small parts. Not for children under 3 years old.
