Pipe wrenches, also known as Stillson wrenches or monkey wrenches, are versatile hand tools used for gripping and turning pipes, fittings, and other round objects. They are designed to provide a strong and secure grip, allowing users to tighten or loosen pipes with ease. Pipe wrenches come in various sizes to accommodate different pipe diameters. They range from small, compact wrenches for working with smaller pipes to large, heavy-duty wrenches used for larger pipes and fittings. The adjustable jaws of a pipe wrench can be opened or closed by turning a threaded knob located near the head of the wrench, allowing for a precise fit on the pipe.