Files that contain the .005 file extension are created by a variety of different file archive and compression tools and file splitting utilities.
Users create archive files when they want to take a large batch of files and compile them into a single archive file folder. When an archive folder is created, some utilities are able to break the archive down into multiple volumes. This makes it easier to distribute the files via the Internet.
When an archive file is split, each volume of the archive is given its own extension in sequence, such as .001,.002, etc. The .005 file extension is usually given to the fifth volume in the file archive.
In order to extract the files from the file archive all of the volume files must be present.
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If you have additional information about the 005 file format or software that uses files with the 005 suffix, please do get in touch - we would love hearing from you.