HAYEAR Bracket DIA 50mm Digital Microscope Table Stand DIA40mm Conversion Ring Included Stand for 10A Zoom Lens and 100X Lens Compatible with Digital

Ring holder: 50 mm 50 mm to 40 mm rings Large table stand for stereo microscope Size: 22 cm x 15.5 cm x 33 cm (height) Ring holder: 50 mm 50 mm to 40 mm rings Large table stand for stereo microscope Size: 22 cm x 15.5 cm x 33 cm (height) Material: aluminum alloy The package includes: 1 x Digital Microscope Stand 1 x 50 mm to 40 mm ring