: If you just want to merge them back into a single large archive, you can use the "Combine files" feature within the 7-Zip File Manager. Why files are split this way

The file is the second part of a multi-volume 7-Zip compressed archive. On its own, this file is just a "piece" of a larger dataset and cannot be opened or extracted without the other accompanying parts (at minimum, the first part ending in .001 ). How to use this "piece"

To access the content within this file, you must treat it as part of a set:

: You only need to right-click and extract the file ending in .001 using a tool like 7-Zip . The software will automatically pull data from the .002 piece to complete the extraction.

Large datasets or software backups are often split into smaller pieces like this to: