A power tool is a tool that is actuated by an additional power source and mechanism other than the solely manual labor used with hand tools. The most common types of power tools use electric motors. Internal combustion engines and compressed air are also commonly used.

The characters of a power tool are light structure, small size, light weight, low vibration, low noise, flexible operation, durable, easy control and operation.

Whether you're cutting, fastening, joining, or finishing, power tools make the job faster, easier. The most common tools are power drills, circular saws, impact wrenches, grinders, miter saws, and rotary hammers.