This specific 3D model, "Circus Cannon 3D model buy", is an asset made available by "Unknown author".
You can download this asset for free at "Unknown platform" by following the link.
Usage of this 3d asset is subject to the "Unknown license" agreement.
OBJ (OBJ, filesize: 225 KB), 3DS (3D Studio, filesize: 128 KB), MAX (Autodesk 3ds Max, filesize: 98.3 KB), FBX (Autodesk FBX, filesize: 105 KB), DXF (DXF, filesize: 305 KB)