1. COMPATIBLE WITH 160MM TUBES This objective lens is specially designed for corrected optical systems and fits seamlessly with 160mm focal length tubes, making it suitable for biological microscopy. 2. SPRING LOADED OBJECTIVES The 40x, 60x, and 100x lenses feature springloaded mechanisms to protect your lenses from damage during use, ensuring durability and reliability in your observations. 3. PRECISE OPTICAL PERFORMANCE Coated optical components enhance and correct aberrations, including spherical aberration and paraxial coma across two bands, delivering exceptional image quality. 4. VARIED MAGNIFICATION OPTIONS This lens provides a range of magnifications (4X, 20X, 40X, 60X, 100X) to meet diverse microscopy needs and applications. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store