Before revision: A large basin wrench detail view of the jaws of a basin wrench A basin wrench, sometimes called a sink wrench, is a plumbing tool which is used in confined spaces to turn fasteners that would be difficult or impossible to reach with a plumber wrench or other types of wrenches.
After revision: A large basin wrench Large basin wrench, with jaws oriented to apply torque in counter-clockwise direction A basin wrench, sometimes called a sink wrench, is a plumbing tool which is used in confined spaces to turn fasteners that would be difficult or impossible to reach with a plumber wrench or other types of wrenches.