This specific 3D model, "Motorcycle Helmet 3D model 2", is an asset made available by "Unknown author".
You can download this asset for free at "Unknown platform" by following the link.
This specific 3D model is provided under the "Unknown license" framework.
OBJ (OBJ, filesize: 1.14 MB), DXF (DXF, filesize: 502 KB), 3DS (3D Studio, filesize: 604 KB), FBX (Autodesk FBX, filesize: 1.08 MB), MAX (Autodesk 3ds Max, filesize: 778 KB)