Because is part of a split archive, a "good post" about it should focus on helping people successfully combine and extract it.
You’ll need a file archiver that supports split RAR files. The most reliable options are: WinRAR : The standard tool for .rar files.
Splitting files into parts (like .part2.rar ) makes it easier to share large content on sites with file size limits and allows users to resume a download if one part fails rather than restarting the entire thing from scratch.