[Camren]

Originally Posted by daniel_dsouza

Whoops, I meant pipe wrench...
http://en.wikipedia.org/wiki/Pipe_wrench

Monkey wrenches are similar, see here:
http://en.wikipedia.org/wiki/Monkey_wrench

It's okay to generic versions, because these things are impossible to break.

Wikipedia probably isn't the best place to get definitions, but it serves the purpose.

I know the differences its just that they are meant for bigger bolts then a robot has. I could see using them as a dead blow or an odd form of a clamp but no on a 7/16 bolt or nut usually in very hard places to reach.