Wrenches are a tool used to hold and tighten fasteners, such as nuts and bolts, or to turn objects that don't have a hole in them, such as wheel studs. Wrenches come in all shapes and sizes, from tiny ones for eyeglasses screws to large ones for automotive engines. There are several types of wrenches, including open-end wrenches, ratcheting wrenches, adjustable wrenches, box-end wrenches, Allen keys and torque wrenches. Depending on the job at hand, having the right type of wrench and size can make the job easier and faster.
