The Power-Deuce is a multl-function brushing tool that prepares the inside of copper fittings and outside of copper tubing without having to change tools. Plus, if your drill quits, you can use it as a hand tool. It's fast and easy - saving time and money. The Power-Deuce is a self-cleaning brush with rust-proof, stainless steel bristles for plumbing and HVAC projects. The brush actually removes copper residual and any buildup when you switch from a fitting brush to the OD tube cleaning brush. A heavy-duty ABS housing is impact resistant and protects bristles so they retain their shape and prolongs brush life.