It cleans both the inner and outer surfaces of 1/2 inch And 3/4 inch Joints and pipes, and can remove debris from pipe threads in preparation for brazing and brazing. Wide use: It can be used to remove rust and paint stains on steel parts, machinery and raw metal parts. It can be used for cleaning, polishing, brazing, brazing, painting/rusting, and deburring of copper pipes or metal components. It is very easy to make copper pipe again to be as clean as new. Materials: The 4 in 1 pipe cleaning tool's bristles are made of stainless steel bristles, that are rust and while preventing wear, tear and flattening of the bristles to clean metal pipes without damaging the or fine features of copper pipes. Comfortable Handle: The 4 in 1 pipe cleaning tool is ergonomically designed with a grip structure that makes it very comfortable to use and gives you a firm grip that is not easy to slide or fall off, improving your work efficiency and long term use Convenient to Carry: The copper pipe cleaner tool is light, compact and easy to store and carry. It only takes up a little space in your toolbox and can go anywhere with you at any time.