The DREMELite is an innovative attachment that screws onto your rotary tool and offers a focused light on your work, whether you are working in a light restricted area, or just need extra light for some close-up detail work. Because it uses the rotation of the tool to generate its own power, there's no battery to change and its long-lasting LED bulb has no filament to ever burn out. The DREMELite attachment can be used for all applications and is especially useful under the sink, in attics, basements and crawl spaces or where fine detail is required.