They are modular elements, it means that it is created in pieces and can be modified and assembled in a different way. It is neither textured nor textured.
SKP (Sketchup, filesize: 1.24 MB), BLEND (Blender, filesize: 4.64 MB), OBJ (OBJ, filesize: 2.15 MB), FBX (Autodesk FBX, filesize: 9.2 MB), 3DS (3D Studio, filesize: 2.09 MB)