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

Also known as monkey and auto wrenches, these tools have smooth jaws that won't scratch your workpiece.

Tighten bolts and grip pipe with the same tool. Reverse these adjustable wrenches from smooth jaws that won't mar fasteners to serrated jaws with a tough grip.

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.

Insert into a pipe or fitting and turn—the wrench grips the walls for easy installation and removal without marring the outside of the pipe.

Made of materials that are Factory Mutual approved, these wrenches inhibit sparking and are nonmagnetic and corrosion resistant. They satisfy OSHA requirements that specify nonsparking tools for locations where flammable vapors and combustible residues are present.

Warning: Do not use these tools in direct contact with acetylene.

There's no adjustment nut or button on these wrenches—a spring-loaded hinge automatically closes the top jaw around pipe.

Turn the end of the handle to set torque, and the wrench makes an audible click when it reaches the setting. These tools come with a calibration certificate that is traceable to JIS and includes the test measurements that confirm accuracy.

Note: Accuracy rating applies to the entire torque range.

Also known as railroad wrenches, these tools have smooth jaws that won't scratch your workpiece. Made of aluminum bronze that is Factory Mutual approved, they inhibit sparking and are nonmagnetic and corrosion resistant. Wrenches satisfy OSHA requirements that specify nonsparking tools for locations where flammable vapors and combustible residues are present.

Warning: Do not use these tools in direct contact with acetylene.