Compressed air is the most common power source, but there are also torque wrenches that use electric or hydraulic power, and batteries as power sources, which are also popular. Air impact wrenches are available in every standard ratchet socket driver size, ranging from small 1/4 "driver tool groups for assembly and disassembly to 3.5". Air impact wrenches are generally not suitable for fastening installation parts with ceramic or plastic components.

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.