AmScope SF20 Barlow Lense/Auxiliary Lense with 2X Magnification and 54mm Mounting Diameter

This is a brand new 2.0X Barlow (auxiliary objective) lens for stereo microscopes. It offers double the magnification, and half,the field-of-view of your microscope, with a 1-3/4" (45mm) working distance. This lens comes with a 2-1/8" (54mm) mounting thread and works with SF series stereo microscopes.