Feature:1. SUPERIOR PERFORMANCE: Microscopes rubber eyecups provide better viewing without interference from external light sources.2. PREMIUM MATERIAL: Rubber eyepiece eyeshields are made of rubber, foldable, easy to use, durable and practical.3. APPLICABLE: Eyepiece eyecups have an inner diameter of 27mm/1.06in and are suitable for microscope eyepieces, monoculars and binoculars of 4248mm/1.651.89in.4. EYE PROTECTION: Microscope eyepiece eyeshields are designed to reduce impact and better guard your eyes.5. PRACTICAL TOOL: Microscope eyepiece eyeshields help to create the perfect distance between the eye and the tentacle.Specification:Item Type: Microscope Eyepiece EyeshieldsMaterial: RubberSize:Height: Approx. 38 mm/1.50inDiameter: Approx. 46 mm/1.81inAperture: Approx. 27 mm/1.06inSuitable for 42-48mm/1.65-1.89in Lens.Package List:2 x Microscope Eyepiece EyeshieldsNote:Please allow for some errors in manual measurements.