Rom pack wont unzip

Hello, I have downloaded and tried to extract with 7zip many times this file but it just wont work. The file is Mame Single Download Mega Packs Rom f.7z.001.
I also have download the .002 which shows as empty. I have tried several ways to get them extracted but I cant. Every time I try I get this message, cannot open file as archive, unexpected end of data.
Can someone please help me with this? I did read a post about a similar thing and even did it that way but it did not work. Thanks.
I also have download the .002 which shows as empty. I have tried several ways to get them extracted but I cant. Every time I try I get this message, cannot open file as archive, unexpected end of data.
Can someone please help me with this? I did read a post about a similar thing and even did it that way but it did not work. Thanks.