Description[Practical to use]:It doubles the magnification of original objectives, and it is a very practical objective lens accessories..[Easy operation]:It is easy to attach on objective, and you can just screw it on..[Enlarged field of view]:The 0.5X stereo microscope assisted objective lens effectively enlarged the field of view..[Increase working distance]:It significantly increase working distance up to 287mm..[Suitable mounting thread]:This lens comes with a 1-7/8" (48mm) mounting thread..Imported from UK .Description:This product features enlarged field of view and easy operation.It is very practical and economical with well equippedaccessories.Specification:Material: Metal, Aluminum alloy, Glass LensModel: KP-0.5XWeight: 85g/3ozMagnification: 0.5XStereoscopic microscope objective lens: 0.3 timesWorking Distance: 165mmMounting Thread Size: 48mm/1.9inchPackage List:1Ã 0.5X Auxiliary Objective Lens