Some jobs require the right tool; servicing exhaust systems is one of those jobs. The Powerbuilt Exhaust Pipe Expander includes everything you need to expand exhaust pipes, round pipe ends, and remove exhaust clamp grooves. This set straightens out dents and bends in tailpipes and mufflers without damaging the parts. You can also use this tool to flare and expand an exhaust pipe to fit another pipe in. This heavy-duty steel tool is designed for use with 1-3/4" - 2-1/4" inside diameter pipes. Adjust the desired diameter on the pipe expander tool, set the snap ring, insert pipe expander in the pipe, and turn the 17mm hex bar with ratchet to the correct size. Every package comes with professionally written usage instructions and photos that take you step by step through proper tool usage.