This specific 3D model, "Concrete Barrier Low-poly 3D model 19", is an asset made available by "Unknown author".
Can be downloaded at "Unknown platform" by following the link.
This specific 3D model is provided under the "Unknown license" framework.
STL (Stereolithography, filesize: 956 KB), OBJ (OBJ, filesize: 1.3 MB), OTHER (Other, filesize: 5.66 MB), TEXTURES (Textures, filesize: 29.9 MB), PNG (PNG, filesize: 29.9 MB), FBX (Autodesk FBX, filesize: 873 KB), DAE (Collada, filesize: 2.6 MB), GLTF (glTF, filesize: 20.2 MB)