The LAKESHORE Engineer A Coaster Activity Kit LL570 is a gear building set designed for young engineers aged 3 and up. Compatible with K'NEX products, this plastic set allows children to explore STEM concepts through hands-on construction. With a focus on building skills, this educational kit comes in a box packaging and includes everything needed to create unique and engaging projects. Perfect for sparking creativity and problem-solving abilities, the LAKESHORE Engineer A Coaster Activity Kit is a great addition to any young builder's collection.