Support creative play, tactile exploration, and patterning using this building set. Durable plastic bristles easily fit together to create satisfying connections and construct anything your students can imagine. This 220-piece set allows for independent builds or collaborative play time. Largest piece measures 13cm L x 5cm W (5-1/4" L x 2" W) and smallest piece measures 3-3/4cm L x 1-1/4cm W (1-1/2" L x 1/2" W).