IME they have their uses if you do a lot of mechanical stuff. The smaller ones don't work well because of the poor tolerances involved but the larger ones are indispensable for "field work" where they work just as well as large combination wrenches for most tasks and one wrench is easier to carry around than a dozen.
I use one for changing the blade on my table saw.
They also double as a hammer if used wrongly enough.
I use one for changing the blade on my table saw.
They also double as a hammer if used wrongly enough.