[WIDE FIELD OF VIEW] Discover an impressive wide angle that allows for thorough observations, for scientific research and educational purposes. [OPTICAL ] The all optical glass lens guarantees a bright and clear image, enhancing your ability to analyze samples effectively. [FMC ANTI REFLECTION TECHNOLOGY] The innovative FMC anti-reflection coating improves light transmission, providing vivid visuals without glare. [STURDY METAL CONSTRUCTION] Crafted with metal housing, this eyepiece withstands regular use while maintaining its integrity. [SIZING ADVISORY] Check your microscope's specifications to confirm compatibility with the 30mm interface before ordering.