Folders containing .dds or .nif files to upgrade graphics.
To access the content, you need an archiver that supports the 7z format: The official, free tool for this format. WinRAR: A popular alternative that can extract 7z files. PeaZip : A cross-platform, open-source extractor.
💡 If this is a mod, always extract it to a temporary folder first to read the Readme before moving files into your game directory.