Air Powered Impact Wrench

impact wrench
A power tool used to tighten nuts or bolts.
An impact wrench (also known as an impactor, air wrench, air gun, rattle gun, torque 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.
A wrench, usually powered by electricity or air, in which repeated blows from little hammers are used to generate torque to tighten fasteners. The torque applied to the fastener depends upon the time and the air pressure applied to the tool (for pneumatic wrenches).

powered
(often used in combination) having or using or propelled by means of power or power of a specified kind; "powered flight"; "kerosine-powered jet engines"
Self-powered, such as by an electric motor or an internal engine; not requiring external power, such as from a person or a horse
Any character with a special power. For example, a character who controls an element, who can read minds, summon demons, see the future, or defy death.
Switch a device on or off
Supply (a device) with mechanical or electrical energy
Move or travel with great speed or force

air
a mixture of gases (especially oxygen) required for breathing; the stuff that the wind consists of; "air pollution"; "a smell of chemicals in the air"; "open a window and let in some air"; "I need some fresh air"
The invisible gaseous substance surrounding the earth, a mixture mainly of oxygen and nitrogen
The free or unconfined space above the surface of the earth
air out: expose to fresh air; "aerate your old sneakers"
This substance regarded as necessary for breathing
be broadcast; "This show will air Saturdays at 2 P.M."