Nanoblock Butterfly A spectacular, iconic Monarch butterfly with dramatic detail in its wings, a level of detail only achieved with Nanoblocks (130 pieces, Level 2) Nanoblocks are a superior building experience with greater challenge, sophistication and detail than any other construction set Build models with incredible detail, astounding authenticity and unparalleled realism, results unmatched by other block-based systems With bricks as small as 4mmx5mm and manufactured to the highest tolerances for a perfect fit, make amazing 3D art that fits in the palm of your hand The Smaller the Brick the Better the Build; all sets come with detailed step by step instructions, for ages 12+ Over 130 assorted size pieces Finished size of 13" wide x 2.5" deep x 2" high Difficulty level 1 out of 5 Includes detailed color instructions Not designed for children under age 8