An impact driver is a tool that delivers a strong, sudden rotational and downward force, often used by mechanics to loosen larger screws (bolts) and nuts that are corrosively "frozen" or over-torqued.The direction can also be reversed for situations where screws have to be tightened with torque greater than a screwdriver can reasonably provide.Manual impact drivers consist of a heavy outer sleeve that surrounds an inner core that is splined to it. The spline is curved so that when the user strikes the outer sleeve with a hammer, its downward force works on the spline to produce turning force on the core and any socket or work bit attached to it. The tool translates the heavy rotational inertia of the sleeve to the lighter core to generate large amounts of torque.
Well balanced ergonomic design.
One handed easy reverse switch.
Ideal for wood work and assembly work.
Compact and light weight.
4 step regulator for precise control.