The .part10.rar suffix indicates this is the 10th piece of a larger set.
The file is the tenth segment of a multi-part RAR archive. Large files—such as high-definition videos, software installers, or games—are often split into multiple smaller "volumes" to make them easier to upload, download, or fit on external storage. Technical Overview 2GB.part10.rar
This specific file cannot be opened or extracted on its own. It is an incomplete segment that requires all other parts in the sequence (e.g., part1.rar through part9.rar , and any subsequent parts) to reconstruct the original data. part1.rar through part9.rar