Before we start on explaining an adjustable pipe wrench, we’ll start with an ordinary one. Essentially, a pipe wrench is a tool that can turn any threaded item such as pipes or nuts and bolts. If the pipe wrench is fixed, you can only use it on pipes or bolts that are the same dimension as the jaws of the wrench. An adjustable pipe wrench, as the name implies, is a pipe wrench with a small mechanism or dial that can make the clamping jaws wider or narrower to fit a variety of pipes, nuts and bolts regardless of their dimensions. The beauty of owning an adjustable pipe wrench is that you can have one wrench instead of several ones of different sizes. Not only is this more practical, it’s also economical.