Nanoblock is a stimulating and entertaining hobby material for everyone, especially for grown-ups: recommended for ages 12 and up. Nanoblock is the world’s smallest micro-sized building block, measuring from just 4x4x5mm for a single piece, packs contain varying numbers of pieces. With 170+ pieces and rated difficulty level 2/5 the nifty Nanoblock Drum Set is the perfect choice for beginners looking to enter or advance in the ever expanding nanoverse!