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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

   An air ratchet wrench is very similar to hand-powered ratchet wrenches in that it has the same square drive, but an air motor is attached to turn the socket drive. Pulling the trigger activates the motor which turns the socket drive. A switch is provided to change which direction the socket drive turns. [1]

4. 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).

5. Power tool - Wikipedia

   en.wikipedia.org/wiki/Power_tool

   Worldwide, exposure to PM 2.5 contributed to 4.1 million deaths from heart disease, stroke, lung cancer, chronic lung disease, and respiratory infections in 2016. [8] Overall, ambient particulate matter is one of the leading risk factor for premature death globally. [9] Many construction tasks create dust. High dust levels are caused by one of ...

6. Hex key - Wikipedia

   en.wikipedia.org/wiki/Hex_key

   A hex key (also, hex wrench, Allen key and Allen wrench, Unbrako or Inbus) is a simple driver for bolts or screws that have heads with internal hexagonal recesses ().. Hex keys are formed from a single piece of hard hexagonal steel rod, having blunt ends that fit snugly into similarly shaped screw sockets.

7. Dental torque wrench - Wikipedia

   en.wikipedia.org/wiki/Dental_torque_wrench

   Toggle torque wrenches (friction-style) and beam wrenches (spring-style) are the most common types in dentistry as manual mechanical torque-limiting devices. [3] Beam type wrenches in general are more consistent to its calibration than toggle types. The beam types with a dial indicator are the most precise to set the Tare torque (zero point reset).