Special975.rar

Since the origin of "SPECIAL975.rar" is often related to unofficial downloads or patches:

Many ".rar" files from the web are password-protected; check the source where you downloaded it for the key. SPECIAL975.rar

Right-click the file after installing your chosen tool and select "Extract Here" or "Extract to SPECIAL975/" to see the files inside. Since the origin of "SPECIAL975

The original software for this format; it offers a free trial. The Unarchiver: The most common free option for Mac users. The Unarchiver: The most common free option for Mac users

If you tell me or what you expect to find inside (like a game mod or specific software), I can give you more detailed instructions on how to use the contents once they are extracted.

Use an antivirus tool or a site like VirusTotal to check the archive for malware.