1、Material: Made of pure copper material, the surface is chrome plated, and the achromatic objective lens feels comfortable. 2、20.2mm Interface Thread: With universal 20.2mm standard RMS interface thread for wide compatibility. 3、Product Features: The low magnification objective lens has a larger aperture, brighter image, large field view, and the image search time is short. 4、Infinity Lens: The imaging of the infinity lens is clearer and sharper, and the field of view is wider than that of the ordinary achromatic objective lens. 5、Clearer and Sharper: The infinity objective lens is a parallel light path with no included angle, correcting the spherical aberration and sink aberration. 1 x Microscope Objective Lens1 x Storage Box (installed)1 x Protective Cover (installed) ​Item Type: Achromatic Objective LensMaterial: Copper + Optical GlassProduct Color: As Pictures Shown Product Weight: Approx. 58g / 2.0ozMultiple: 2XAperture Value: 0.05mmApplicable Models: Biological Microscope