This specific 3D model, "decorative pattern ready for 3D printing 3D model 536", 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: 28.1 MB), OBJ (OBJ, filesize: 47.3 MB), FBX (Autodesk FBX, filesize: 15.3 MB), MAX (Autodesk 3ds Max, filesize: 46.4 MB)