Features: 1.100% brand new and high quality. 2. The biomicroscope eyepiece with an interface diameter of 23.2 mm can be used in a 23.2 mm lens barrel. 3. Wide-angle eyepieces view can be more than 50% larger than ordinary eyepieces 4. The image is bright and clear, the effect is clearer. 5. Eyes are not easy to fatigue when viewingwhich can protect your eyes. Specification: Condition: 100% Brand New Model:DM-WF009 Magnification: WF16X Field of View: 13 mm Weight: Approx. 40g / 1.4oz Mounting Diameter: Approx. 23.2mm / 0.9in Package List: 1 * Eyepiece 1100% brand new and high quality. 2The biomicroscope eyepiece with an interface diameter of 23.2 mm can be used in a 23.2 mm lens barrel. 3Wide-angle eyepieces view can be more than 50% larger than ordinary eyepieces 4The image is bright and clear, the effect is clearer. 5Eyes are not easy to fatigue when viewing which can protect your eyes.