Ahh!! Your right !! I had one, way back when I had a yard with a lot of sprinklers. I was confused with the tool in this video. It is for removing faucet seats.
[ame="https://www.youtube.com/watch?v=qF_4BGZLP1E"]How to Use a Seat Wrench to Pull a Faucet Seat - YouTube[/ame]