This specific 3D model, "Concrete Barrier RoadBlock 3D Model Pack purchase", 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.
MAX (Autodesk 3ds Max, filesize: 12.3 MB), OBJ (OBJ, filesize: 624 KB), FBX (Autodesk FBX, filesize: 111 KB), MAX (Autodesk 3ds Max, filesize: 12.3 MB), OTHER (Other, filesize: 18.6 MB), 3DS (3D Studio, filesize: 66.4 KB), PNG (PNG, filesize: 737 MB)