The budding little civil engineer in the family would love this classic toy! Since 1913, erector sets have been used by kids to create everything from cranes to buildings, towers, excavators, bridges and more. The Erector set can teach kids to build just about anything they can imagine, but also teach them creativity, observation, deductive reasoning, logical thinking, principles of mechanics, physics & problem solving. Kids can use erector sets to learn the concepts of center of gravity, the advantages of pullies, load bearing, robotics and more. And this special edition set has enough materiel to build over twenty five different models. Erector Set Anniversary Case builds 25 Amazing Erector Models! Ball-bearing body rotation and movable feet 6V motor (4AA batteries not included) 2 clutches to activate the arm 643 parts (All metal except for a few smaller plastic pieces) Special Edition easy-to-carry storage case Complete, Illustrated Instructions Ages 8 and up Schylling's main objective is to create and offer unique products that offer a variety and distinctive appeal to customers around the world. A love of a classic toys with a detailed focus on new products, concepts and play patterns is what makes Schylling so special and stand apart. Schylling is one of the country's leading manufacturers of specialty toys. Since 1975, they have been creating the future with new, innovative designs and reviving the past with retro toys.