This Leica illuminator was made to fit the Leica StereoZoom microscope. It provides precise, uniform and bright shadowless illumination of specimens over the entire field of view. Each comes with the 220/240VAC power supply, illuminating ring and fuse. The fluorescent light is 3" in diameter with the housing being 3-3/8" in diameter. The 220/240VAC power supply has the standard 2 round prong plug. These are new in box with instruction manual and are selling elsewhere for more than $200.00.