Does anyone know if these unreal assetts could be used for printing?

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Fantasy and Sci Fi essentials for Unity

https://www.humblebundle.com/software/fantasy-and-sci-fi-essentials-for-unity-software?mcID=102:64d63ee046b10dc6bb0a94ae:ot:56de8106733462ca896a8054:1&linkID=64d63ee10943dcb3af00727f

This treasure trove of sci-fi and fantasy assets will bring your Unity game project to the next level! Pay what you want and support Alzheimer's Research UK!

Fantasy and Sci Fi essentials for Unity

I don’t know how these asset packs work. Could I get .stl files from them?