a light attachment that can be readily mounted on a variety of tools and tool support fixtures and other support structures includes a light portion supported on a mounting portion by a flexible gooseneck cable . the mounting portion includes a housing that defines a male - female attachment element configured to slidingly mate with a complementary attachment element formed on the body of the power tool . in a preferred embodiment , the attachment element has a dovetail shape for sliding engagement within a complementary shaped notch in the body of the tool . the housing contains a power source for the light portion . the light portion incorporates an on - off switch that is actuated by rotating a component that is threadedly engaged within the housing . the housing supports a printed circuit board to which the power supply wires are attached . the circuit board also carries a spring contact switch element that completes an electrical circuit to energize the light portion when the spring contact is pressed against the circuit board . power is supplied through the circuit board and switch to an led light element . the led is disposed within the housing so that the rotatable component can push the base of the led into the spring switch to close the electrical circuit .