Intelligent Assembly Alloy Helicopter Construction Kit – 159-Piece STEM Building Set for Kids & AdultsTake to the skies with the Assembly Alloy Helicopter, a hands on construction toy from the Intelligent Assembly Toys 'Series'. This kit is designed to bridge the gap between play and education, offering a rewarding building experience that results in a durable, movable model. Whether for a budding engineer or a hobbyist, this set provides a novel way to explore the mechanics of flight and assembly. Key Features Durable Alloy Construction: Built with