When I discovered I had swollen nuts I bought three different tools each to help me remove swollen nuts. Other tools didn't help. This is the tool that ultimately helped me get rid of swollen nuts. I aligned this tool with the nut as best I could, placed a 2x4 piece of wood on the end, and then used a rubber mallet to slide the tool onto the nut. By attaching a socket wrench, the swollen nut was easily removed. I recommend this CTATools 4221 swivel head with nut.