Gear Wrenchs

gear
One of a set of toothed wheels that work together to alter the relation between the speed of a driving mechanism (such as the engine of a vehicle or the crank of a bicycle) and the speed of the driven parts (the wheels)
A particular function or state of adjustment of engaged gears
gearing: wheelwork consisting of a connected set of rotating gears by which force is transmitted or motion or torque is changed; "the fool got his tie caught in the geartrain"
Equipment that is used for a particular purpose
a toothed wheel that engages another toothed mechanism in order to change the speed or direction of transmitted motion
set the level or character of; "She pitched her speech to the teenagers in the audience"