Description Exhaust replacement is this powerful tool?s specialty. Now you can cut off mufflers and tail pipes quickly, efficiently, and quietly. It has an 18,000 rpm motor that can handle the toughest exhaust replacements and cut sheet metal, nuts, and bolts. 3/8? arbor x 2-7/8? wheel size Fast, quiet operation Contoured lever throttle with positive self-locking action Built-in speed regulator 360