Air impact wrenches are widely used in many industries, such as automotive repair, heavy equipment maintenance, product assembly (usually referred to as "pulse tools" and specifically designed for precise torque output), major construction projects, installation of steel wire inserts, and high torque output needs anywhere else.

Air impact wrench, also known as a combination of ratchet wrench and electric tool, is mainly a tool that provides high torque output with minimal consumption. It accelerates and rotates an object with a certain mass through a continuous power source, and then instantaneously collides with the output axis, thereby obtaining a relatively large torque output.