The official, free, open-source tool for this format. You can right-click your file and select 7-Zip > Extract Here to view the contents.
Run: 7z l Enz1.7z to list all files contained within the archive. Potential Issues Enz1.7z
If you just want to see what is inside without unzipping the whole archive, you can use the (included with the Windows install) or the command line: Open your command prompt. Navigate to the 7-Zip folder. The official, free, open-source tool for this format
Available for both iOS and Android to manage archives on the go. How to Inspect Without Extracting Enz1.7z
A popular open-source alternative for Mac users that handles 7z files seamlessly.