These eyepiece covers are ideal for anyone who spends lots of time using optical devices. Whether you're a professional scientist, an amateur astronomer, or a birdwatching enthusiast, these covers will help protect your equipment and enhance your viewing experience. Features -Color:Black -Material:Plastic -Size:3.70X3.70X1.80cm/1.45X1.45X0.71in -Broad application: fits 32 mm-35 mm stereo microscope eyepieces, making it suitable for a wide range of environments -Eye-friendly: made from comfortable materials, it effectively protects your eyes from strain and irritation -Effortless setup: the protector is easy to install, providing quick and convenient solution for microscope users - : made from Plastic, easy to clean, ensuring can be used for longtime -Comprehensive: it prevents others from entering the eyepiece, protecting the microscope Package list: 2 x eyepiece covers