WF25X Microscope Eyepiece 12mm Wide Field of View for 232mm Mount Port Biological Microscope view is also expanded, which is not only comfortable to watch, but also has a wider field of view and clearer imaging._x000D_ _x000D_ Product Description:_x000D_ Magnification: 25X_x000D_ Field of View: 12mm_x000D_ Mounting Size (in diameter): 23.2mm_x000D_ Lens Material: Glass_x000D_ Shell: Metal_x000D_ Microscope: Biological Microscope_x000D_ Special reminder: This eyepiece is equipped with professional biological microscopes, with a diameter of 23.2mm. Not all microscopes can be used. Please do not buy this eyepiece if you use a toy microscope! (The diameter of the simple and toy microscopes on the market is 20mm or other sizes, which does not match this eyepiece)_x000D_ Please allow 0-2mm error due to manual measurement._x000D_ Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!_x000D_ Material: Metal_x000D_ colour: black_x000D_ _x000D_ Package Contents:_x000D_ 1 x Biological Microscope Eyepiece_x000D_ _x000D_ Only the above package content, other products are not included._x000D_ Note: Light reflection 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. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_