This free "Concrete barrier Low-poly 3D model 10" 3D asset is currently listed under the authorship of "Unknown author".
Can be downloaded at "Unknown platform" by following the link.
This specific 3D model is provided under the "Unknown license" framework.
BLEND (Blender, filesize: 981 KB), OBJ (OBJ, filesize: 752 KB), FBX (Autodesk FBX, filesize: 49 KB), GLTF (glTF, filesize: 54.5 KB), ABC (Alembic, filesize: 50.9 KB), STL (Stereolithography, filesize: 39.9 KB), DAE (Collada, filesize: 101 KB)