A pipe wrench, or what can be commonly referred to as a plumber's wrench, is a wrench used for turning soft iron pipes with a rounded surface. When adjusted to the size of the pipe in question, the jaws close down as forward motion is put on the wrench. The teeth in the jaw bite onto the pipe and provide more grip as pressure is increased. The ToolPRO Cast Iron 250mm Pipe Wrench is a very handy tool for any home DIY renovator that might have to undo piping around the house. The design of this tool provides an amazing amount of grip and force that will surpass any conventional wrench.