This set is a great way to put a kid’s creativity in motion with gizmos, a fun twist on a classic building set. Kids build early stem skills such as problem-solving, critical thinking, and perseverance when they construct their own creations. This 83-piece set include springs, spirals and propeller, plus small, medium and large gears and bases. Since there’s no end to the possible combinations and designs your child can create, the learning play can keep your kids engaged for years. Our gears! Pieces are made from sturdy plastic and snap together to bring colorful motion to any creation while challenging motor skills and creativity. Compatible with all other gears! Gears! Gears!® sets for even more imaginative fun. Ages 3 and up.