Features 1、Material: Made of pure copper, chrome plated on the surface, metal material, feel comfortable. 2、Universal Lens: Universal 20.2mm standard RMS interface thread, have broad compatibility. 3、Low Power Lens: The low power lens has a larger aperture, and the imaging is brighter and the field of view is larger. 4、Infinity Lens: The infinity lens forms a clearer and sharper image, and the field of view is wider than ordinary achromatic objectives. 5、Infinity Lens: The infinity objective lens is parallel light path, no included angle, spherical aberration and sink aberration are corrected. Specification Item Type: Microscope Objective Lens Material: Copper + Optical Glass Color: As Pictures Shown Weight: Approx. 58g/2.0oz Multiple: 1X Numerical Aperture: Approx. 0.03mm/0.001in Applicable Models: Biological Microscope Package List 1 x Microscope Objective Lens 1 x Storage Box (Installed) 1 x Protective Cover (Installed)