Features 1、CLEAR IMAGING: High light transmittance, high refractive index, brighter and clearer imaging. 2、EXQUISITE WORKMANSHIP: The mirror body is made of all metal materials, with fine workmanship and quality assurance. 3、UNOBSCURED: It is more comfortable to watch, the lens will not corrode or blur, and the service life is long. 4、SCOPE OF APPLICATION: Standard interface, all microscopes of the same aperture can be used. 5、CAREFUL WELDING: Lightweight and practical, portable and light, without burden, strong performance and very stable. Specification Item Type: Protective Glasses Material: Aluminum Alloy Optical Glass Lens Diameter: Approx. 39mm/1.53in Height: Approx. 15mm/0.6in Thread Outer Diameter: Approx. 48mm/1.9in Interface: M48 Purpose: Special Objective Lens for Microscope Magnification: 1 X Package List 1 x Protective Lens