Feature: 1. Excellent Performance: This lens features high transmittance, high refractive index, it can provide you with more bright and clear imaging. 2. Aluminum Alloy Shell: Made of premium aluminum alloy, the shell of this lens is strong and sturdy, lightweight and wear resistance, which ensures a long life span. 3. Fine Workmanship: The microscope lens is well made of smoothly appearance and no production trace, with fine workmanship and good performance, not easy to corrode. 4. 30MM Diameter: The microscope eyepiece has standard 30mm interface and can be used by any stereo microscope with the same diameter. 5. Ideal Replacement: This 30mm microscope with clear image performance, is an ideal replacement for the old and damaged parts. Specification: Item Type: Microscope Eyepiece Material: Aluminum Alloy Features: Approx. 30mm / 1.2in standard caliber, suitable for various types of microscopes Multiplication: 10X Diopter: - 8 to +2 Field of View: Approx. 25mm / 0.98in Installation Diameter: Approx. 30mm / 1.2in. Package List: 1 x Microscope Eyepiece