The Bolt Buster BB2X-ACC High Power 1800W Heat Induction Tool heated up a rusted 3/4" nut for me on a bolt until it was orange in less than one minute. After it was allowed to cool, I was able to remove the nut without effort. The tool has some weight to it, somewhat like half of a baseball bat. The tool is worth every penny. I wrapped the straight insulated wire, included in the kit, around the jam nut on an outer tie rod end. Again, in less than a minute the jam nut was glowing. After it cooled, the nut unscrewed with no effort. In less than one week after receiving the Bolt Buster, I haven't needed my acetylene torch for heating rusted fasteners. No flames means way less worry. I highly recommend the Bolt Buster 1800W!