rear freeze plug leaking, mortal engine wound

64dart wagon, I used a tool similar to that and it was in my box for free. I had a straight shot at the plug so I used one of my high precision sockets and an extension to smack it in8) worked like it was made for the job. I talked to a guy at NAPA about the tool and he said use the socket......but thanks for letting me know there is a tool made for the job.