Features Professional Made: The lens magnification of this auxiliary objective is 0.5X, which doubles the magnification of the object you need to observe. Premium Metal Material: The aluminum alloy shell is wear resistant and drop resistant, which can provide perfect protection for the center lens. Perfect Replacement: Our objectives are exquisitely crafted to fit your microscope perfectly and are a great option to replace broken or old objectives. Easy to Install: The microscope objective is precisely sized and easy to install on the microscope, you just need to screw it on and use it, which is very convenient. Main Application: This objective is suitable for SM series stereo micromirror, extending the working distance and live view of the microscope. Specification: Item Type: Auxiliary Objective Lens Material: Aluminum alloy Model: WD165 Use: Microscope accessories Magnification: 0.5X Package List: 1 x Auxiliary Objective Lens Package List 1 x Auxiliary Objective Lens