1 Inch Impact Wrench

impact wrench
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).
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 power tool used to tighten nuts or bolts.

inch
A unit used to express other quantities, in particular
a unit of length equal to one twelfth of a foot
A unit of linear measure equal to one twelfth of a foot (2.54 cm)
A very small amount or distance
column inch: a unit of measurement for advertising space
edge: advance slowly, as if by inches; "He edged towards the car"

1
one: used of a single unit or thing; not two or more; "`ane' is Scottish"
"?1" (read "Infinity Ichi"; translated as "Infinity 1") is Do As Infinity's twenty-first single, released on June 17, 2009. The band had disbanded in September 2005, but reformed three years later in September 2008.
one: the smallest whole number or a numeral representing this number; "he has the one but will need a two and three to go with it"; "they had lunch at one"