10 Pieces Small Wire Brush Scratch Brush (Stainless Steel + Brass), Curved Handle Masonry Brush Wire Bristle for Cleaning Welding Slag and Rust

I use these on my 3D Printer Hot End to clean the nozzle and Heater block. They seam sturdy enough, probably wont lost super long depending on your application but they are cheap enough so that you can treat them like consumables.

Works great

Bristles are a little softer than I hoped but great value.

Thread clean.

Used for light soldering.

Not for teeth, dont buy this if you have intentions on using it for teeth but for light surface rust its great

inexpensive but effective brushes for cleaning various materials

Excelent

Great product for small rusty parts.

Decent value for the money. Bought this intentionally for light duty use cleaning small parts, threads, etc. and it gets the job done. Used heavy pressure with one of the steel brushes on a rusty large fitting. Bristles started to fall out after about a minute.