You get 4 nuts and 4 bolts. They are the same color but different shapes and sizes so it is a good shape matching activity as well as fine motor. What they are learning WHILE having fun: - Hand/Eye coordination - Being able to line up and place the nuts on the bolts and the bolts through the holes. - Color recognition – Kids need to recognize the differences in the colors in order to place the nut on the matching bolt. - Fine motor - Practicing using fine motor pincer grasp in order to manipulate the bolts. Builds hand muscles and dexterity which are essential for a proper pencil grasp.