This specific 3D model, "Manhole Cover 3D model buy", 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".
OBJ (OBJ, filesize: 190 KB), 3DS (3D Studio, filesize: 95.8 KB), BLEND (Blender, filesize: 532 KB), DAE (Collada, filesize: 194 KB), FBX (Autodesk FBX, filesize: 250 KB)