Tkolyzcl.7z

: Many developers use .7z for open-source project releases.

: Download and install the official version from 7-zip.org. Once installed, right-click the file and select Extract Here or Extract to "TkolYzCl" .

You can use 7-Zip on any computer, including a computer in a commercial organization. You don't need to register or pay for 7-Zip. Does 7z compress better than zip? - Microsoft Community Hub

The filename is a specific compressed archive created using the 7-Zip software, a free, open-source file archiver. Because it is a .7z file, it likely uses high-ratio LZMA or LZMA2 compression to store data more efficiently than a standard ZIP file.

Do you have for this archive, or are you having trouble installing the software needed to open it?