1[Wide Field of View] The wide angle and widefield design of this eyepiece provide a broader field of view, offering users a larger viewing range and enhancing the overall visual experience. 2[Diopter Adjustment] This microscope eyepiece allows users to adjust the diopter according to different vision of both eyes, ensuring clear image quality. 3[30mm Interface] With a 30mm mounting interface, this microscope eyepiece is compatible with most microscopes available on the market, offering convenience and flexibility for users. 4[Optical Lens] Utilizing optical coating technology, with premium optical lens, this eyepiece delivers clear and sharply imaging, enhancing the overall viewing experience. 5[Metal Body] Crafted with aluminum alloy body, this microscope eyepiece is built to last, ensuring long term durability and reliability for extended use. 2 x Microscope Eyepiece