Right-click on GT05.part1.rar and select "Extract Here."
Use tools like WinRAR, 7-Zip , or The Unarchiver to extract the contents. GT05.part1.rar
If you can tell me what kind of content you were expecting inside the file, I might be able to help you find the information another way! Right-click on GT05
Ensure you have GT05.part1.rar , GT05.part2.rar , etc., in the same folder. in the same folder.