Pliers consist of a pair of pivoted jaws that are used for holding, bending, cutting, or turning objects. They also allow one to manipulate objects that are too small or too unwieldy to be manipulated with fingers.
Wrenches are used to turn objects, most commonly nuts and bolts.Wrenches are almost always a better tool than pliers for loosening and tightening nuts and bolts because they provide greater torque than pliers and are less likely to round or damage fasteners.
