I got a script today that was free but had to do some digging for the extra database files and they are in this format
file.zip.part1
file.zip.part2
file.zip.part3
file.zip.part4

Tries to remove the .part1 tried as a rar, zip even tried removing the .zip.part and adding .r01 no luck. I have tried winrar and 7zip but not having any luck anyone have any other ideas?