Build your very own Holstein Cow with the smallest building blocks in the world! The Holstein is the best known type of cow belonging to the dairy breeds. They are recognizable by their distinctive black and white markings. The finished Holstein Cow fits perfectly in the palm of your hand. A challenging building set for beginner building block fans, the nanoblock Cow building set features over 170 micro building blocks allowing you to build in greater detail. Includes detailed color instructions. Definitely not designed for children under the age of 8 years since the pieces are very tiny. Level of difficulty on this one is a 2 - with "5" being most difficult.