A power tool is a device that uses an external power source, such as electricity, batteries, or compressed air, to perform tasks more efficiently than manual tools. Common examples include drills, saws, and sanders. These tools are designed to make work easier and faster, especially in construction, woodworking, and metalworking. Power tools come in various types, each suited for specific tasks. For instance, a cordless drill is ideal for drilling holes without being tethered to a power outlet, while a table saw provides precision for cutting large pieces of wood. Safety features are essential to prevent accidents during use.