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

Well worth every penny paid.

These little brushes are retractable which is helpful to control the stiffness of the bristles, that said the bristles in the metal brushes are a little sparse, but work for what I want them for. I am satisfied with the price and quality.

Maybe the steel and brass pens are.. Ok.. Kinda.. But the fiberglass does nothing, Nothing at all. Wont even scratch a PCB. Youll regret the purchase if PCB solder mask removal is at all why you are purchasing,. GOOD LUCK.

Works as described. I mostly use the fiberglass pen on motherboards and it barely flake off any fibers, does an impressive job being accurate

Good set of brushes. Hold up well.

First time looking for something like this to clean hard to reach rust on tools. Ive only used the metal ones so far, and they work about as well as fine steel wool work if I could get it in there, except it takes about 10 times longer. The tip just feel out, because the mechanism that holds it in place is simply a short piece of piping that it pops into. Hopefully Ill figure out where I can find a similar tool grade tool soon. Update, after cleaning over 100 tools in the last month, using various different steel brushes, several very well made and expensive. This tool works better at certain things than even the best stainless steel $20+ single brushes. You cant move it however you want to, but once I figured out to use it in back in forth strokes, no longer than 1/4 inch, it works where others cannot. It also helps focus the brushing right where the rust is. Upgrading the review to a 5.

I have now tried all 4 pens, even though I truly only needed the fiberglass. The brass and steel pens hold up fine, but its not a great idea to just start scratching away at things with metal. The nylon brush is useless. You might as well get a $1 kids paint brush, because you will not scratch away anything with the soft edges of this nylon. Finally, the fiberglass pen. I was trying to remove about a 1in x 0.5in section of circuit board coating and it did NOTHING to remove that coating. By the time I scraped away the top coat with a separate, metal spudger, I went back to the fiberglass to polish. POOF. The whole section tried to disappear into the pen. Fished It out with tweezers and clamped the holding section so tight I could barely get the pen tip back on. First round back at it, a little resistance then the whole thing disappeared again. If youre going to need the fiberglass specifically, DO NOT BUY THIS PACKAGE. Spend a few extra dollars and get a quality product that will last AT LEAST a single use.

Works great to erase little errors in woodburning. Can pull out paint as well.

I used them for removing corrosion from leaked ni-cd batteries. They worked well.

Great little brushes