1、Protective Function: Designed to reduce impact, better protect your eyes, and help create the perfect distance between eyes and tentacles. 2、High Compatibility: The inner diameter of the eyepiece eyeshield is 33mm, which is suitable for 32 to 35mm microscope eyepiece, telescope and other lenses. 3、Durable Rubber: The eyepiece eyeshield is made of rubber, which is soft, foldable, easy to use and can be used for a long time. 4、Applicable Model: Suitable for AmScope SW, SM and ZM series stereomicroscopes. They are suitable for any eyepiece with an outer diameter of 33 to 35 mm, including for Nikon, for Leica, for Olympus and wild type stereomicroscope eyepieces. 5、Reduce Interference: After adding an eyepiece eyeshield, the microscope has no interference from external light source, and the observation effect is better. 3 x Microscope Eyepiece Eyeshields Item Type: Microscope Eyepiece EyeshieldsMaterial: RubberWeight: Approx. 23g / 0.8ozFolding Eyepiece Eyeshield Inner Diameter: 36mm / 1.4in, Suitable for 34 to 37mm LensBig Horn Eyepiece Eyeshield Inner Diameter: 33mm / 1.3in, Suitable for 32 to 35mm LensSmall Horn Eyepiece Eyeshield Inner Diameter: 33mm / 1.3in, Suitable for 32 to 35mm Lens