Promo Pulley Expansion 21-Piece Set for Kids

Product description: Bring the world of engineering to life with the Brackitz Pulley Expansion Add-on Set! This 21-piece set has all the parts you need to build replicas of real-world machines like an Archimedes crane, a moving drawbridge, and a 4-foot flying zip line. Kids can learn about mechanical advantage and simple machines while having fun building unique 3D structures that are incredibly sturdy. Plus, it's easy to clean with just a rinse of warm water. Independently tested for safety, these pieces are certified non-toxic, BPA-free, lead-free, and phthalates-free - perfect for classroom use too! Recommended for ages 7 and up. With Brackitz Pulley Expansion Add-on Set you can inspire your kids' creativity while teaching them essential STEM skills they'll need in the future. Get ready to explore science through play!