Use tools like WinRAR or the open-source 7-Zip . For macOS: Use The Unarchiver or Keka .
If the files inside have no extensions, you can use the file command in a command line or an online tool like CheckFileType to see their true format. GIA067-069.rar
Use caution when opening .rar files from unknown sources, as they can contain malware. Scanning the file with antivirus software before extraction is highly recommended. Displaying the file type (file command) - IBM Use tools like WinRAR or the open-source 7-Zip