What tool is described as a smooth-jawed, adjustable wrench for turning nuts, bolts, and pipe fittings?

The tool described as a smooth-jawed, adjustable wrench for turning nuts, bolts, and pipe fittings is the crescent wrench. This tool is characterized by its unique design that features an adjustable jaw, allowing it to grip fasteners of various sizes. The smooth jaws prevent any damage to the workpieces, making it ideal for adjusting and loosening fasteners without leaving marks, which is particularly important in scenarios where aesthetics or integrity of the surface is a concern.

Additionally, a crescent wrench can be used effectively in tight spaces where other types of wrenches may not fit. Its versatility makes it a common choice for both professional mechanics and DIY enthusiasts alike. The ability to easily adjust the jaw size allows for quick changes without the need to switch between multiple tools, enhancing efficiency during maintenance tasks.

While other tools mentioned, like the strap wrench or basin wrench, have specific purposes tailored for certain tasks, the crescent wrench's design enables it to handle a wide range of common fastening applications in park maintenance and various other repair tasks.