What is a pipe wrench?

• A. A Wrench With An Adjustable Jaw That Tightens To Grip When Torque Is Applied To The Handle.
• B. A Wrench With One Open And One Closed End.
• C. A Wrench With Ratchet Movement, Used With A Socket.
• D. A Tool Used To Tighten Or Loosen Allen Screws.

Answer: (A)

A pipe wrench is designed to grip round pipes by biting into them with serrated jaws that can be adjusted to fit different sizes. When you apply torque to the handle, the jaws clamp tighter on the pipe and the teeth bite into the metal, locking the grip so you can turn the pipe without slipping. This adjustable jaw plus the torque-driven bite is what makes it the tool used for plumbing tasks. The other descriptions refer to tools that don’t grip pipes in this way: one is a wrench with an open and closed end, another uses a ratchet and socket, and another is for hex screws.