Pixiss Scratch Brush Pen Set With Replacement Tips, Fiberglass, Steel, Brass, Nylon, 5-inches Pen Style Prep Sanding Brush 4-Pack For Corrosion, Rust, Jewelry, Circuit Boards and Auto Body Work

Had some rust build up this is a great product to remove it since you can target a thin line without being invasive to the surrounding areas that are not damaged

These do the job, pretty straight forward.

These are being used as one treatment when removing encrustations from ancient coins. They are used with little pressure in a circular motion and work very well.

These work great for removing paint from small statues with fine detail.p

Excelente producto lo recomendó

Really useful little brushes. The bristles extend out about 1.5 inches for a softer brush, or keep it short for stiff bristles. Used it to clean some minor rust and it worked beautifully. Had a small problem with my order but seller responded right away & took care of the problem. Good product and excellent customer service. A+

Awesome set of brushes!!!

This whole set costs as much as one brass bristle brush on Rio Grandes website. I can use them for different projects, with the primary being the brass brush for cleaning files.

I ordered the whole set just to get my hands on the fiberglass scratch brush for electrical contacts. I had ONE that I used for at least 10 years but I had to leave it behind at work when I retired. This set of 4 various-fibered brushes looks O.K., but I eagerly got out the glass bristle one and twisted out a little stiff bit, and went at a tiny rust spot on a knife blade. Bloop! The fibers disappeared up into the body of the pen. Turned the advancing knob on the top. Nope. Nothing. Took the end off and there was the bundle of glass fiber. It wouldnt move except for a tiny bit and turning the knob did nothing. So, I guess thats what I have. Nothing. Just a broken pen and 3 more types for which I have no use.

I have used these to clean up old model locomotives. Cleaning the motor from dirt with the fiberglass pencil and the corrosion off with the brass or steel. They work well, clean things off very easily and they arent difficult to use. Quality is a little lack luster though. The nylon pencil wouldnt extend until I took off the front end. And the steel got stuck on retraction. Both was fixed by removing the front end, making the bristles straight, and putting the front end back on. The cheap, plastic feel also makes me worried about how they will hold up over long term use. No instructions on how to replace the bristles with the spares is also an issue. All in all I would say they are decent, you get what you pay for though.