Description:     Adjustable 180X Magnification Zoom 25mm C-mount Lens 4.5X Adapter for Industry Microscope Camera Eyepiece Magnifier     Specification:   Working distance: 95mm Zoom c-mount Lens 0.5X C-mount adapter Zoom ratios: 6.5:1 Objective Magnification Power by 0.7 - 4.5X(about 10 - 180X on the display) Size: 168mm(L) * 50mm(DIA) Weight: 450g      Package includes:    1 x 180X Industry Lens   Details pictures: