4 In 1 Pipe Cleaning Tool 4PCS Copper Tubing Brush Black Copper Pipe Cleaner Tool Fitting Brushes Copper Tubing for Plumbing Installation, Soldering, Copper Pipes, Tubes, Brazing, Pipe Deburring Features ?It cleans both the inner and outer surfaces of 1/2 And 3/4 Joints and pipes, and can remove debris from pipe threads in preparation for brazing and brazing. ?It 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. ?The bristles are made of stainless steel bristles, that are rust resistant and corrosion resistant while preventing wear. ?It can be used for cleaning, polishing, brazing, brazing, painting/rusting, and deburring of copper pipes or metal components. ?It can be used to remove rust and paint stains on steel parts, machinery and raw metal parts. ?It is light, compact and easy to store and carry. Specification Size: Total length is 7.9 Height is 0.87 Large hole diameter is 0.79 Small hole diameter is 0.5 Quality: Stainless steel bristles Colour: Black Quantity: 4 pieces.