I have a BMW SUV and a lawn tractor that routinely challenge me when needing to work on them. The lawn tractor hadn't had the belts replaced in years. That main pulley coming off the Briggs engine was locked on. Trying to keep the pulley from turning while removing the bolt was impossible. Bought this air impact wrench, set it on reverse. Did nothing to hold the pulley in place... Set the switch to \"R\" and let it rip. The bolt was out in seconds. It really doesn't get any better than that. Go in with the right tool for the job and stop messing around. This is a low price to pay to save hours of frustration. I also used this tool to replace the front suspension on our farm vehicle a Gen 1 BMW X5. I had zero problems removing even the oldest bolts in the suspension. Just a great tool to have when you need it.