NATIONAL GEOGRAPHIC Da Vinci Model Kit – Catapult Kit for Kids, 3D Puzzle Building Toy for Boys and Girls, Wood Building Kit for Kids, A Great STEM Project, Engineering Model Kit (Amazon Exclusive)

BUILD THREE REMARKABLE MACHINES – a Ballista (an enormous crossbow), a Bombard (an early form of the cannon) and a mighty Catapult.
SEND PROJECTILES UP TO 15 FEET – Each model is fully functional; the kit comes with 15 projectiles plus 6 paper targets.
EVERYTHING YOU NEED – Assemble each model in 1-3 hours: laser-cut wooden components, rubber bands, sandpaper and clear, simple instructions. No special tools necessary.
AN INCREDIBLE GIFT! These high-quality models are fun to build and even more fun to use! They make an amazing gift and are a fantastic STEM-based activity.
HIGH-QUALITY EDUCATIONAL TOYS – We’re proud to make the highest quality hands-on science toys, and all our products are backed by exceptional service. If your experience is less than stellar, let us know and we’ll make things right!