Description These microscope rubber eye cups are made from high elasticity rubber, offering protection and comfort for your microscope eyepiece. The non-slip design ensures a clear viewing experience, while precise fitting helps guard optics eyepiece protector against scratches and dirt. Enhance your research, lab, or educational setting with these reliable microscope replacement parts. Features -Color:Black -Material:Rubber -Size:3.50X3.50X2.00cm/1.38X1.38X0.79in -Size:4.10X4.10X2.30cm/1.61X1.61X0.90in -High elasticity material: these microscope rubber eye cups are made from rubber, providing comfort and durability while protecting your microscope eyepiece from wear and tear -Design: the rubber eyepiece cover eyepiece guard is engineered for a fit on most microscope eyepiece cup sizes -Enhanced visual experience: binocular rubber eyepiece replacements offer features, allowing for cleaner optics and a more comfortable viewing experience with your stereo microscope -Easy installation and removal: with an intuitive design, these eyepiece protector covers can be quickly attached or removed from any microscope replacement parts, making cleaning -Versatile compatibility: suitable for various optical devices, this set of rubber eyepiece guard replacements works with microscopes, binoculars, and telescopes, expanding its usability as essential eyepiece accessoriesPackage list: 2 x microscope eyepiece cover (31-33 mm) 2 x microscope eyepiece cover (36-38 mm)