Open and close the jaws with one hand. Press the lever and slide the bottom jaw to the desired position; tension keeps it in place.

Made of materials that are Factory Mutual approved, these wrenches inhibit sparking and are nonmagnetic and corrosion resistant.

The jaws grip most round surfaces, even highly polished objects. Push down on the wrench and pull the handle toward you—the jaws will tighten around the workpiece.

Use one end as a traditional pipe wrench and the other to loosen valve wheels. These are also known as engineers’ pipe wrenches.