This pattern is simple and resembles a roof tile texture. It may come in handy for the needs of a 3D project of yours. Since this is a repeating 3D pattern, it has been modeled in such a way that its desired size can be easily adjusted by copying and cutting. By downloading some of the files with this 3D pattern, only a 3D model painted in brown will be at your disposal, with absolutely no lighting, textures, rendering, etc.In case you do not have a commercial CAD program, download some of the free 3D CAD software (for example FreeCAD) to be able to open these files.