Just like any other K’Nex sets, this one has parts that can rotate. This allows kids build moving models, like this helicopter with rotating blades.
![K'Nex Intermediate Set - Helicopter K'Nex Intermediate Set - Helicopter](https://buildkitpedia.com/wp-content/uploads/2023/09/inter-5-1024x771.jpg)
Just like any other K’Nex sets, this one has parts that can rotate. This allows kids build moving models, like this helicopter with rotating blades.