WD165 0.5X 0.7X 1.0X 2.0X Auxiliary Objective Lens Microscope Barlow Lens For Trinocular Stereo Zoom Microscope Camera LensDescription:0.5X 0.7X 1.0X 2.0X Auxiliary objects lens For Stereo Zoom Microscope, assisted Objective Lens for Trinocular Stereo Zoom Microscope, 0.5X 0.7X 1.0X 2.0X Barlow Auxiliary Objective Glass LensFIXPHONE 0.5X 1.0X 0.7X 2.0X assisted objects lens Auxiliary for Stereo Zoom MicroscopeOption: 0.5X 1.0X 0.7X 2.0X - Magnification Power, Doubling Total Magnification power of your Microscope and reduce the length.SZM 0.5X 1.0X 0.7X 2.0X assisted Auxiliary Objectives Len For Stereo Zoom Microscope Accessoires