Material Construction: Crafted from resilient materials, these objective lenses withstand the rigors of frequent use in a lab setting. Compatibility with Biological Microscopes: These objective lenses are specifically designed to fit biological microscopes, enhancing their functionality. Achromatic Objective Lens: Enjoy clear, color-neutral images with the standard DIN achromatic objective lens, ensuring accurate observations. Optimal Conjugate Distance: Achieve optimal focus with a 185mm conjugate distance, designed for biological microscope imaging. Specification Magnification: 40X Conjugate Distance: 185mm Standard DIN achromatic objective lens Suit Microscope: Biological Microscope Note:Please check as much as possible to make sure the item is what you need. Color:As Shown Material:Metal Package Contents: 1 * Biological Microscope Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.