This specific 3D model, "decorative pattern ready for 3D printing 3D model 281", is an asset made available by "Unknown author".
You can download this asset for free at "Unknown platform" by following the link.
The licensing terms for this digital asset are governed by "Unknown license".
STL (Stereolithography, filesize: 14 MB), OBJ (OBJ, filesize: 23 MB), FBX (Autodesk FBX, filesize: 7.32 MB), MAX (Autodesk 3ds Max, filesize: 23.2 MB)