This is a Lens Ring Adapter, Working diameter 76mm, Installation diameter 50mm, if you have a stereo microscope, this Lens Ring Adapter can help you from the stereo microscope to the video microscope,Applicable to 120X 180X 300X working diameter 50mm Monocular c-mount lens.
Model: Stereo Microscope Monocular Lens Ring Adapter
Inside Diameter: 50 mm
Outside Diameter: 85mm
Working Diameter: 76mm
Material: Metal
Package Including:
1 x 73mm Ring Adapter