Daylight Ultra Slim Lens #2 For use with the Daylight Ultra Slim Fluorescent Magnifier Lamp) 3x Magnification 8 Diopter Lens Diameter: 7.5cm (3 inches) Designed to Fit the Daylight Ultra Slim Magnifying Lamp 22020-01 Ease Eye Strain While Working On Small Details Ideal for Precision Work with Crafts, Hobbies and Miniatures