Based on your request, it seems you are trying to download or handle a large file that has been split into smaller parts (a ".rar" archive).
Right-click the first file (.part1.rar or the file without a number) and select "Extract Here" using a program like WinRAR. The software will automatically combine all the parts into one file. Download 570K rar
Store all downloaded parts in the same folder. Based on your request, it seems you are