A wrench is a specific tool used to apply torque to rotate or hold an object in place, such as nuts or bolts.

There are various sizes for wrenches, as with most other hand tools. They range from 1/16 in. to 3/8 in. to 3/4 in.

There are different types of wrenches such as adjustable wrenches, monkey wrenches, and combination wrench. The most common is the socket wrench, and is the one we use most often.