Brazzers is one of the biggest adult movie companies in the whole world, you can find their videos streaming on pretty much every adult site, but reliable downloads are a little trickier to come by...
I guess you might want to download some Brazzers videos if you're going to be offline for a certain amount of time, with no connection to the internet and a desire to "pleasure yourself", I could see why Brazzers downloads would be handy.
Sometimes a man has needs...
If this is the case, then the truth is most Brazzers downloads are behind a paywall.
There are some torrent sites like http://kickasstorrents.come.in/search/brazzers/ which claim to have Brazzers movies for download.. But with Torrents you never know what you're downloading till it's too late.
My suggestion would be to use the free streaming sites that everyone knows and loves!