Smithsonian Motorworks Build Real Working Engine Spark Plugs Battery Operated Explore the world of engines with the Smithsonian Motorworks kit. This 4-cylinder model is a fantastic hands-on learning tool for enthusiasts and learners alike. With a multicolor design, it's not only educational but also visually appealing. Suitable for ages 8-11 years, it's the perfect way to introduce young minds to the basics of motor function. The kit comes unassembled, allowing for a fulfilling building experience, and includes a stand to showcase your creation once finished. It operates on AA voltage, providing an interactive experience with a simple battery swap. Crafted with a combination of plastic and metal, this kit is a durable and long-lasting addition to any STEM collection.