Function: 1. 20X Lens: Designed to have 20x magnification, the microscope lens will zoom in better on the subject for easy observation. 2. Clear imaging: This lens is coated with a high transmittance layer and a high refractive index for brighter imaging. 3. Wider tool: can be used do observe the structure and composition of fibers, steel, ceramics do research, research, experiments and so on. 4. Good material: adopting the highest quality brass and aluminum alloy materials with chrome housing, very durable with corrosion and fall. 5. RMS Interface: Equipped with standard RMS interface, the lens is highly compatible with most professional biological microscopes. Specification: Item Type: Microscope Lens Material: brass, aluminum alloy. Application: widely used. The threaded interface is standard RMS size and can be used in most professional biological microscopes. Specification: 20X How to use: Installed on a microscope do direct use. List of packages: 1 x microscope lens 1 x do storage tube