AmScope SM07-V203 Barlow Lense/Auxiliary Lense with 0.7X Magnification and 48mm Mounting Diameter

This is a 0.7X Barlow (auxiliary objective) lens for stereo microscopes with 48mm threading. It modifies the microscope's magnification by 0.7X to slightly increase the field of view and  the working distance. The mounting thread is 48mm, compatible with AmScope SM, SW, and ZM series stereo microscopes.