air impact wrench

Most major tool manufacturers carry an air impact wrench, including DeWalt, Ingersoll, and Craftsman.

Air impact wrench - wheel nuts off and on in a zip and very useful when removing head bolts or trying to undo large nuts on the suspension etc.

Many air impact wrenches incorporate a flow regulator into their design, either as a separate control or part of the reversing valve, allowing torque to be roughly limited in one or both directions, while electric tools may use a variable speed trigger for the same effect.