An adjustable wrench (British: spanner) with a toothed jaw for gripping pipe, frequently used by a plumber or pipe fitter, to loosen and tighten pipes with threaded connections, designed such that any forward pressure on the handle tends to pull the jaws (otherwise slightly mobile in the tool plan) tighter together.
a wrench for gripping and turning a pipe; has two serrated jaws that are adjusted to grip the pipe
adjustable wrench for gripping and turning a pipe; has two serrated jaws that are adjusted to grip the pipe