MegaCastFiberglass Scratch Brush Pen - 3 Pack - Jewelry, Watch, Coin Cleaning, Electronic Applications, Removing Rust and Corrosion

These work amazing! They are perfect for watch work, jewelry, electronics, or anything fragile you might need just a little bit of abrasion to help with the cleaning process without damaging your parts.

These are excellent. The fibres are much finer than the older fibreglass erasers, much less chance of leaving scratch marks.

These fiberglass brushes allow me to get into tight areas of my pieces of jewelry after micro welding to clean things up.

Got my dull rusty 50 cents coin looking like brand new again, will definitely be buying more of these to clean up my entire coin collection!

I thought my son was nuts. I couldn't see for the life of me how it could possibly work. But to my surprise it did. He showed me one he had cleaned and one that had rust on it. The one he had cleaned looked brand new and it had been the worst one. I still don't know how it cleans rust and corrosion so well. I just know it does.