Features Auxiliary Lens: The auxiliary objective lens is able to extend the working distance and field view of the microscope, this objective lens will simplify your working. 2X Magnification: 2X magnification enables a clearer viewing on the object, which will also bring you more enjoyment in the observation. Perfect Match: Suits perfectly for SM series stereo microscope, the auxiliary lens is a good replacement for the old and damaged part. Aluminium Alloy Material: The 2X objective lens adopt premium aluminium alloy material, not likely to break, and also has excellent durability for long term using. Easy to Install: The auxiliary objective lens 2x accessory comes with a compact size and a light weight, the convenient installation can be quickly completed within minutes. Specification: Item Type: Auxiliary Objective Lens Model: WD30 Material: Aluminium Alloy Function: Microscope Accessory Magnification: 2X Package List: 1 x Auxiliary Objective Lens  Package List 1 x Auxiliary Objective Lens