Rom sets only contain one rom

[Berrakus]

I downloaded the NES No Intro rom set on my Mac. The file downloaded ok and was the correct size, but when I tried to open it with EZ7Z, it only contained one rom. I then tried with the Sega rom set and it only contained one rom as well. Does anyone have any ideas? Thanks

[deadlegion]

Try using keka or another more recent archive manager.

Ez7z is no longer actively developed.

^ So wouldn't have up to date support for 7zip archives.
I believe keka was updated back around Feb this year, not sure about other managers for OSX.