Features ♥Material Specifications: Material: Brass, Aluminum Alloy, The Magnification of The Objective Lens Is Up to 40 ♥Achromatic Objective Lens: Used to Study Chemistry And Physics; Can Also Be Used to Study The Behavior And Reaction of organisms, And Observe The Crystal Structure And Morphology Of Materials And Compounds,The Objective Lens Is Made of High-Quality Brass And Aluminum Alloy Materials, Which Are Corrosion-Resistant And Drop-Resistant, Ensuring A Long Service Life ♥Compatibility: The Microscope Objective Lens Is Designed for International Standard Rms Size Microscopes, Most Professional Biological Microscopes on The Market Can Be Used ♥Durable: Microscope Objective Lenses Are Made Of Tough Laboratory-Quality Materials to withstand Daily Use. Each objective Lens Is Strictly Inspected Before Shipment, Which Is Helpful for Research in The Field of Materials Science And Engineering, Observing The Structure And Composition of Natural And Man-Made Fibers, Steel, Ceramics ♥Clear Image: This Achromatic Objective Provides High-Quality Observation without Additional Chromatic Aberration, Resulting In Clearer Microscope Images. Specification: Item Type: Microscope Objective Lens Material: Brass, aluminum alloy Application: Wide range of applications, international standard RMS size thread interface, most professional biological microscopes in the market can be used Basic Parameters: Specification: 40X Package List:1 x Objective Lens1 x Storage Container Package List 1 x Objective Lens 1 x Storage Container