An Allen wrench works. If you have a plumbing issue, however, you’re likely to turn to the wrench that can sink its literal teeth into pipes. That’s a pipe wrench, also known as a Stillson wrench.

Allen Wrenches Are Essential For Hex Bolts ... of searching for the right fit. Pipe Wrenches Are Essential For Plumbing Projects Pipe wrenches, often called plumber's wrenches, feature an ...