: To open the file, place all parts in the same folder. Opening the first file (usually labeled .part01.rar or just .rar ) with a tool like WinRAR or 7-Zip will automatically pull data from the other pieces, including the 12th one, to recreate the original large file.
: The number in parentheses usually indicates that this is the 12th part of a split archive. Download GG(12) rar
: This is a proprietary archive format used for data compression. How to Use a Split RAR Archive : To open the file, place all parts in the same folder