Question about bottle/nipple brushes!

Hi everyone. I'm expecting my first child, so shopping for stuff is new and confusing for me.
I've noticed that each brand of bottle brushes is paired next to the same brand of bottle. So I'm guessing that only those brushes can be used for the same bottles..? (ex: Playtex bottle brushes will be located next to Playtex bottles and nipples)
But I have been buying Nuk bottles and nipples but haven't been able to find the Nuk nipple brushes or bottle brushes anywhere in any store. Does anyone know which brushes work with the Nuk brand?
I am sorry if this is actually a ridiculous question. I'm just worried about buying any random brush in case it's too big or small.
Thanks for the help!

You can use any. They do them by brand as a sales technique because if u buy their bottles u might grab their overpriced brush too since ts conveniently right there.

Quoting Andi S:" Hi everyone. I'm expecting my first child, so shopping for stuff is new and confusing for me. I've noticed ... [snip!] ... a ridiculous question. I'm just worried about buying any random brush in case it's too big or small. Thanks for the help! "

I used the cheap Walmart brand for all my bottles and it never messed them up. I'm not falling for the marketing and buying the expensive one. LOL. Good luck mama

Yep any brush.

Yep, what she said. heck, you can even use the walmart brand or target brand or whatever else.you can find.cheaper  

Dollar general brand works too.

Thanks everyone! (: this helped a lot