Feature: 1. Better Images: The coated lens has high transmittance and high refractive index, so the image is brighter and clearer. 2. Reliable Uses: Ensuring wide field as well as more comfortable viewing, the lens is not likely to corrode or dazzle. 3. Smart Designs: Designed to have standard 30mm interface, and all stereo microscopes with the same diameter can use it. 4. Fine Crafting: Combing all aluminium alloy body and optical glass materials, has good durability for long term using. 5. Easy to Install: Comes with a compact size and a light weight, the convenient installation can be quickly completed. Specification: Item Type: Microscope Lens Model: WF20X/10 Material: Aluminium Alloy + Optical Glass FuncTion: Microscope Accessory Magnification: WF20X Field of View: Approx. 10mm / 0.39in Interface Diameter: Approx. 30mm / 1.18in Lens Diameter: Approx. 23mm / 0.91in Mirror Body Height: Approx. 60mm / 2.36in Application: Use the eyepiece on continuous zoom stereo microscopes. . Package List: 1 x Microscope Lens