Features 1、STANDARD 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. 2、SPRING 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. 3、RELIABLE 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. 4、CLAER IMAGING: The lens of the achromatic objective lens are coated with high transmittance, with high refractive index and brighter imaging. 5、NO COLOR DIFFERENCE: An achromatic objective can eliminate unwanted reflections and increase contrast, providing perfect observation without additional color difference, making the image clearer. Specification Item Type: Achromatic Microscope Objective Material: Brass, Stainless Steel Use: The thread interface size is an international standard RMS size, and most professional biological microscopes on the market can be used Specification: 100X Package List 1 x Achromatic Microscope Objective 1 x Storage Box