Description The microscope eyepiece is designed to the performance of virtually any field optics. Eyepiece cover are made from rubber materials, designed to shade your eyes from light and wind. Providing improved clarity and focus, let you own satisfying using feeling. Features -Color:Black -Material:Rubber -Size:4.20X4.20X1.80cm/1.65X1.65X0.71in -Inner diameter: 3.60cm/1.42inch -Note: suitable for 34mm-37mm microscope eyepiece. - Thesemicroscope eyepiece covers are suitable for different applications, fit your demands. - Improves clarity, focus, eliminates distractions, reduces glare, protects the eyes from the elements. - The microscope eyepiece cover acts as a buffer to protect the eyepiece from collision. - The microscope guard cover can also protect the lens from dust and water, achieve good protection effect. - Light weight, small size, therubber eye cover is easy to use, take and also store. Package List2 x microscope eyepiece covers