Tools like 7-Zip or The Unarchiver (for Mac) can extract these files for free.
As a RAR file , it supports advanced data compression, error correction (recovery records to fix damaged files), and optional password encryption. How to Access the Features PICTG03.rar
To see what is inside and use its contents, you need an extraction tool: The standard utility for this format. Tools like 7-Zip or The Unarchiver (for Mac)