8 Pieces Scratch Brush Pen Set, Pen Style Prep Sanding Brush With Steel, Brass, Fiberglass, Nylon Replacement Tips for Jewelry, Watch, Coin Cleaning, Electronic Applications, Auto Body Work

Brushes are reasonable quality for price however if using these on circuit boards the stiff fiber is not stiff enough to remove conformal coatings and you need to use the brass or steel brushes. Other than the stiff fiber brush not being as aggressive as what I was used to they work fine.

Très efficace pour nettoyer les petites pièces qui étaient rouillées

the handle is plastic, and very very easy to break. After about a minute of use, one of the handle broke and wont open anymore.

For what Im doing it works great

works for a few jobs then just toss them....... china JUNK ..not built to last

There are visual stress marks on the top of the pen where the cap attaches to the pen. THe cap constantly pops off alowing the brush to recract back into the pen. These are to cheap to be practical.

Works as described no issues

I have used a these a few times and they done the job I expected of them. They definitely helped reaching areas that I could reach with my fingers.

A combination of tools allowing you to remove minor surface contaminants as well as corrosion to keep that perfect contact for batteries. Good for removing surface corrosion for volume sliders, battery contact springs and surfaces. Different materials allow you to select the abrasive brush desired.

I wanted a fiberglass pencil to clean electrical contacts and this set had several materials other than the fiberglass. That said, i have used the fiberglass and the steel wire variants…. One to clean a network connector and the other to clean corrosion off the contact in a grill igniter. The steel one worked great. The fiberglass is a tad soft and it does work….but i have had one in the past that was about 20% stiffer and in general was better. Overall you cant go wrong and they give a couple extra inserts. Worth the purchase!