Match shapes and colours to create satisfying connections and clicks using this colourful nuts and bolts set. Young children can practice and strengthen fine motor skills, counting, and shape and colour recognition by using their hands or the included chunky tools to screw pieces together. This 84-piece set invites multiple children to play at the same time, working together to build patterns and problem solve. Largest piece measures 4cm L x 10cm W (1-3/4" L x 4" W).