: If you do not have it, download the free extractor from the official 7-Zip website .
: This indicates that the original file was compressed using the 7-Zip format before being split.
To access the contents inside this file, you cannot just extract part .006 by itself. You must gather all the pieces.
What are you trying to reconstruct from these archive parts?
: This is not a standalone file. It is part 6 of a larger multi-volume compressed archive.