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2. Socket wrench - Wikipedia

   en.wikipedia.org/wiki/Socket_wrench

   Socket set with ratchet (above), four hex sockets and a universal joint. A socket wrench (or socket spanner) is a type of spanner (or wrench [1] in North American English) that uses a closed socket format, rather than a typical open wrench/spanner to turn a fastener, typically in the form of a nut or bolt. [2]

3. Impact wrench - Wikipedia

   en.wikipedia.org/wiki/Impact_wrench

   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 ...

4. Torx - Wikipedia

   en.wikipedia.org/wiki/Torx

   Torx (pronounced / tɔːrks /) is a trademark for a type of screw drive characterized by a 6-point star-shaped pattern, developed in 1967 [1] by Camcar Textron. [a] A popular generic name for the drive is star, as in star screwdriver or star bits. The official generic name, standardized by the International Organization for Standardization as ...

5. List of screw drives - Wikipedia

   en.wikipedia.org/wiki/List_of_screw_drives

   A square screw drive uses four-sided fastener heads which can be turned with an adjustable wrench, open-end wrench, or 8- or 12-point [67] sockets. Common in the 19th and early 20th centuries, when it was easier and cheaper to manufacture than most other drives, it is less common today (although still easy to find) because the external hex is ...

6. Impact driver - Wikipedia

   en.wikipedia.org/wiki/Impact_driver

   An impact driver is a tool that delivers a strong, sudden rotational force and forward thrust. The force can be delivered either by striking with a hammer in the case of manual impact drivers, or mechanically in the case of powered impact drivers. It is often used by mechanics to loosen larger screws, bolts and nuts that are corrosively "frozen ...

7. Wrench - Wikipedia

   en.wikipedia.org/wiki/Wrench

   Wrench. A set of metric spanners or wrenches, open at one end and box/ring at the other. These are commonly known as “combination” spanners. A wrench or spanner is a tool used to provide grip and mechanical advantage in applying torque to turn objects—usually rotary fasteners, such as nuts and bolts —or keep them from turning.