This specific 3D model, "decorative pattern ready for 3D printing 3D model 327", is an asset made available by "Unknown author".
Can be downloaded at "Unknown platform" by following the link.
Usage of this 3d asset is subject to the "Unknown license" agreement.
STL (Stereolithography, filesize: 9.65 MB), OBJ (OBJ, filesize: 15.6 MB), FBX (Autodesk FBX, filesize: 5.11 MB), MAX (Autodesk 3ds Max, filesize: 16.1 MB)