Features Made of high quality aluminum alloy, strong and durable. Beautifully crafted, the image is bright and clear, and the effect is excellent. Zoom c-mount lens, 120x, the object can be enlarged, the image is clear. The eyes are not easy to fatigue during observation, protect the eyesight, suitable for all kinds of optical microscopes, easy to install. Widely used in microelectronics, molds, precision machinery, jewelry, watches, jewelry, especially for observing the surface microstructure of large objects. Features: -Made of high quality aluminum alloy, strong and durable. -Beautifully crafted, the image is bright and clear, and the effect is excellent. -Zoom c-mount lens, 120x, the object can be enlarged, the image is clear. -The eyes are not easy to fatigue during observation, protect the eyesight, suitable for all kinds of optical microscopes, easy to install. -Widely used in microelectronics, molds, precision machinery, jewelry, watches, jewelry, especially for observing the surface microstructure of large objects. Specifications: Condition: 100% Brand New Material: Aluminum Alloy Magnification: 120 times Working distance: 50mm-350mm Field of view: 3.1mm-66mm zoom c-mount Lens zoom ratios: 5:1 Magnification Power by 0.11X - 2X Standard C interface: approx. 25mm / 1in Diameter:  approx. 35mm / 1.4in approx. 28mm / 1.1in Package list: 1 * Lens Package List