The task light is useful when working on small applications and reduces eyestrain. If you don't need the light a light diffuser has been included. Larger grey adjustment knobs have been provided for easier positioning. You will find many uses for this versatile extractor, do not miss your opportunity to own one today!. - Powerful bench top fume extraction system provides ultra-quiet and compact two stage charcoal impregnated filtration. Proprietary FUMINATOR ROTAFILTER system draws fume away from operator and provides filtration 8 times better than a stationary filter.