Feature:1. Auxiliary Lens: Able to extend the working distance and field view of the microscope, this objective lens will simplify your working.2. Clear Viewing: 2X magnification enables a clearer viewing on the object, which will also bring you more enjoyment in the observation.3. Perfect Match: Suits perfectly for SM series stereo microscope, the auxiliary lens is a good replacement for the old and damaged part.4. Good Material: Adopting premium aluminium alloy material, not likely to break, and also has excellent durability for long term using.5. Easy to Install: 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: WD30Material: Aluminium AlloyFunction: Microscope AccessoryMagnification: 2X.Package List:1 xAuxiliary Objective Lens