Welcome to our store! 1. Made of high-quality optics and metal, it is durable and practical. 2. The magnification is WF10X, the image is bright and clear, and the effect is clearer. 3. When using this product, the eyes will not get tired easily, which can effectively protect eyesight. 4. The national standard installation size is 23.2mm, which is suitable for most biological microscopes on the market. 5. Built-in reticle with scales for easy adjustment of the angle, calibration of the measured object's position, easy to observe. Features: Made of high-quality optics and metal, it is durable and practical. The magnification is WF10X, the image is bright and clear, and the effect is clearer. When using this product, the eyes will not get tired easily, which can effectively protect eyesight. The national standard installation size is 23.2mm, which is suitable for most biological microscopes on the market. Built-in reticle with scales for easy adjustment of the angle, calibration of the measured object's position, easy to observe. The wide-angle eyepiece has a large viewing angle and a wide field of view, which not only improves the softness of vision, but also makes the image clearer and brighter. Specifications: Material: Optical glass, metal Magnification: WF10X Field of view: 18 mm Quantity: 1pc Installation size (diameter): approx. 23.2 mm / 0.9 inches Package List: 1 * Eyepiece Your 100% satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will give you the best solution!