The imposing pipe wrench with teeth was once made out of wood.

Plumbers' wrenches look like spanners, but they have extra-long jaws good for gripping pipe fittings. Adjustable wrenches - ...

That’s a pipe wrench, also known as a Stillson wrench ... monkey wrenches and other types of clamping tools was that their jaws were usually smooth. That worked for fasteners like nuts, since ...