Clipping Tools?

Ok, so before people go saying "Don't Clip Your Aussie" give me a chance to speak. I've seen various Aussies on Instagram and have heard from many people about a certain technique of clipping. They don't clip all the way, but it does take off a significant amount of hair. People have told me (and I've seen pictures) that using this technique their hair grows back fine in time for winter.

I have 4 dogs right now and the hair is driving my mom and dad insane. What I've been meaning to ask is if anyone knows what type of clippers are recommended to get this style of clip. I've heard about an "E" Comb, but does the size of the comb depend on the dog? An information on this would be appreciated!

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