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2. Impact wrench - Wikipedia

   en.wikipedia.org/wiki/Impact_wrench

   A 1/2" drive pistol-grip air impact wrench. An impact wrench (also known as an impactor, impact gun, air wrench, air gun, rattle gun, torque gun, windy gun) is a socket wrench power tool designed to deliver high torque output with minimal exertion by the user, by storing energy in a rotating mass, then delivering it suddenly to the output shaft.

3. Power wrench - Wikipedia

   en.wikipedia.org/wiki/Power_wrench

   A power wrench is type of wrench that is powered by other means than human force. A typical power source is compressed air. There are two main types of power wrenches: impact wrenches and air ratchet wrenches or pneumatic ratchet wrenches. [1]

4. Battery torque wrench - Wikipedia

   en.wikipedia.org/wiki/Battery_torque_wrench

   The largest Battery torque wrench ever was invented and manufactured in Germany in 2013. It is capable of 31,000 Ft lbs of power with a 2.5 inch square drive output. Torque capabilities of battery torque wrenches range from 30 Nm, up to a maximum of 42.000 Nm (20 Ft. Lbs - 31.000 Ft. Lbs). The first battery torque wrench with a brushless motor ...

5. Socket wrench - Wikipedia

   en.wikipedia.org/wiki/Socket_wrench

   A second major variety of compressed air powered tools are impact wrenches which are used for common tasks such as lug nuts on wheels. Electric powered impact wrenches for the same tasks are not uncommon. Small cordless 12 volt and 18 volt impact drivers are often used today as powered ratchets to remove and install nuts and bolts.

6. Impact driver - Wikipedia

   en.wikipedia.org/wiki/Impact_driver

   An electric impact driver typically delivers less torque and accepts smaller tool bits than an impact wrench. This makes the impact driver more suitable for driving smaller screws in (for example) construction work, while an impact wrench is preferred in situations requiring more torque to drive larger bolts and nuts (such as lug nuts).

7. Pneumatic tool - Wikipedia

   en.wikipedia.org/wiki/Pneumatic_tool

   A pneumatic tool, air tool, air-powered tool or pneumatic-powered tool is a type of power tool, driven by compressed air supplied by an air compressor. Pneumatic tools can also be driven by compressed carbon dioxide (CO 2 ) stored in small cylinders allowing for portability.