If you downloaded this file from an untrusted source, be cautious. Fake 7-Zip installers and malicious archives are sometimes used to deliver malware. Always scan the file with security software before opening.
If you have the "piece" (the data/files) ready and need to create the archive: Nylon.7z
: Set to "Ultra" if you need the smallest possible file size. If you downloaded this file from an untrusted