What I need is one of those brushes like the bottle brushes used to clean baby bottles. A round brush with 1 1/2" or more of bristles.

Needs to be nylon bristles. Like it around 1 1/2 inches diameter, but anyway over an inch.

Want it to scrub the inside of my .22 suppressors. One has a titanium body, 3 others have aluminum. I really don't want to use metal on the aluminum tubes.

Surefire makes one of the sort, sold as specifically made for my needs, but at $12 or so, it's kinda expensive.

I figure there must be something out there intended for another purpose, but my search engine virtuosity is poor.