Do you have the of this archive, or are you seeing an error message when trying to open it?
Split files (except for the last one) are usually exactly the same size. If one is smaller, the download may be corrupted. SS-Ale-016_s.7z.002
Right-click the file ending in .001 and select "Extract Here." The software will automatically pull data from part .002 to reconstruct the original video or folder. Do you have the of this archive, or