Can be converted into an .exe file that extracts itself without needing the 7-Zip software installed.
daemondevin/7-ZipPortable: A portable build of 7-Zip ... - GitHub Stepu.7z
There is no widely recognized software feature or specific public project named Based on the file extension, this is likely a private compressed archive created with 7-Zip software. Can be converted into an
Can split large files into smaller volumes (e.g., .7z.001 , .7z.002 ) for easier sharing. How to Open or Create "Stepu.7z" Stepu.7z
Supports AES-256 encryption to protect your data with a password.
Combines multiple similar files into a single stream to achieve even better compression.