Feature:1. High quality C-mount lens for industrial microscope camera, convenient to use.2. Suitable for XDC and for XDS monocular video microscopes, very reliable.3. Double the total magnification of the microscope and shorten the focusing length.4. Practical accessory, easy installation, suitable for industrial microscope camera.5. Made of high quality material, which is durable and can be used for a long time.Specification:Condition: 100 percent Brand NewItem Type: C-Mount LensMaterial: Metal and GlassHeight: Approx. 15mm or 0.6inOuter Diameter: Approx. 45mm or 1.8inInner Diameter: Approx. 32mm or 1.3inConnection Diameter: M42x0.75Magnification: 0.3XMounting Thread: 1-3 or 4in (42mm)Objective Zoom Multiple: 0.7-4.5X (About 10-180X on the display screen, about 0.35X 0.5X 2.0X, magnification about 2.45-360X) .Package List:1 x C-Mount Lens