The magnification is WF10X, the image is bright and clear, and the effect is clearer. Built-in reticle with scales for easy adjustment of the angle, calibration of the position of the measurement object, easy to observe The national standard installation size is 23.2 mm, which is suitable for most biological microscopes on the market. Made of high-quality optics and metal, it is durable and practical WF (Wide field) wide-angle field of view is suitable for many microscopes, optical components, and metal mirror bodies, which not only enriches the magnification of the microscope, but also has a wider field of view When using this product, the eyes are not easily fatigued, which can effectively protect eyesight colour: black Material: Metal Size: 18mm Package Contents: 2 x Microscope Eyepiece Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!