This indicates a compressed folder. To view the contents, you need a utility like WinRAR, 7-Zip, or The Unarchiver to "extract" the files. Safety and Security Tips
This likely serves as an internal catalog number or "set" ID for a specific collection of media. (@kingnudz)TH215rar
Before extracting any .rar file from a social media source, run it through a scanner like VirusTotal to check for hidden scripts or executables. This indicates a compressed folder
a reputable extraction tool (7-Zip is free and open-source). Right-click the file and select "Extract Here." you need a utility like WinRAR