I only have 5 brushes and no cup brush so bought a set
In fact, there is no brush for cups in the kit. It's not that they're useless, I'll still use them, but it's like getting spaghetti when you order lasagna. Yes, of course I'm not against spaghetti, but I ordered lasagna. My life is falling apart
Pros
. High marks for support and durability from testers.