Feature 1STANDARD RMS THREAD: The thread interface of this achromatic objective lens is an international standard RMS size, which can be used by most professional biological microscopes on the market. 2SPRING PROTECITON: The objective is equipped with a spring protection device, which can automatically resilient when in contact with the cover glass during observation, protecting the lens from damaging the specimen. 3RELIABLE MATERIAL: The microscope objective is made of brass and stainless steel, with chrome plated on the outer shell, corrosion prevention and fall resistant, ensuring service life. 4CLAER IMAGING: The lens of the achromatic objective lens are coated with high transmittance, with high refractive index and brighter imaging. 5NO COLOR DIFFERENCE: An achromatic objective can eliminate unwanted reflections and increase contrast, providing perfect observation without additional color difference, making the image clearer.Item Type: Achromatic Microscope ObjectiveMaterial: Brass, Stainless SteelUse: The thread interface size is an international standard RMS size, and most professional biological microscopes on the market can be usedSpecification: 100X .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Achromatic Microscope Objective1 x Storage Box