This specific 3D model, "Tennis Ball Low-poly 3D model get", is an asset made available by "Unknown author".
Can be downloaded at "Unknown platform" by following the link.
The license for this digital asset is "Unknown license".
STL (Stereolithography, filesize: 6.25 MB), MAX (Autodesk 3ds Max, filesize: 9.91 MB), TEXTURES (Textures, filesize: 174 MB)