We call them a pipe wrench here also, BF pipe wrench will get you the big one. The story behind that was when I was at a garage sale this lady seen me looking it over it was marked $20 and I glanced at it one more time and was leaving. The lady said it was her late husband's and if I wanted it she would take less $$ for it. I said I don't really need it all of the plumbing anymore is plastic or soldered copper. Then she said just take it with you, I seen you look at it twice and I don't want it under my feet anymore. So that's how it found my garage..Vernski