Feature:1. 23.2mm Universal Standard Interface: The international standard biological microscope interface size is 0.91 inches, which is 23.2mm in millimeters, and 95 percent of biological microscopes on the market can be universal.2. Tips: In order to facilitate observation, it is recommended to start from low power observation to obtain a good field of view and brightness, according to the needs of the observed object, gradually watch at high power.3. 2X Mirror: HD high grade optical lens, biological microscope universal 2 times expansion mirror, imaging clear without deformation.4. All Metal Tube: The surface and inner wall are smooth and fine, the body and inner wall are aluminum alloy material, durable, anti scratch.5. Reasonable Design: Light weight, easy to carry, flexible to use, you can use according to your own needs, to provide you with convenience.Specification:Item Type: 2X Multiplier Eyepiece LensWeight: 26g/0.9ozMaterial: Aluminum alloy and optical glassMultiplier: 2X.Package List:1 x Microscope Eyepiece