An adjustable wrench is a versatile hand tool used for gripping and turning nuts, bolts, and other fasteners. It features a movable jaw that allows the user to adjust the width of the opening, making it suitable for various sizes of hardware. This tool is commonly made of steel for durability and often has a comfortable grip for ease of use. The design of the adjustable wrench includes a fixed jaw and a sliding jaw, which can be adjusted using a thumb screw or a lever. This flexibility makes it a popular choice among mechanics, plumbers, and DIY enthusiasts, as it eliminates the need for multiple wrenches in different sizes.