Set comes with 33 micro K’NEX pieces to build a rocket car. °Includes an introductory car build, and second build, a race car. °Set comes with an easy-to-follow instruction manual. Ideal for kids 5 and up. °STEAMagination – It’s the connection of STEAM (science, technology, engineering, arts, & math) with a child’s curiosity and creativity. It powers the fun of each K’NEX set. °K’NEX supports the developmental growth of hand-eye coordination, fine motor skills, problem-solving skills, & spatial awareness. Packaging may vary.