The eye shield is universal for eyepiece. It is designed to the performance of virtually any field optics. Eye shield connects to the eye piece and fits most performance optics. The technology found in eye shield is designed to shade your eyes from light and wind. Providing improved clarity and focus.Features- Color: Black.- Material: Rubber.- Size: 3.90X3.90X3.90cm/1.53X1.53X1.53 inch.- Made of durable rubber that doesn't hurt your stereo microscope.- Eyepiece cover is designed to reduce impact, and better protect your eyes.- Help create the perfect distance between the eye and the reach.- Suitable for stereo microscope, wide angle microscope eyepiece, and for eyepiece of the microscope and telescope and other lenses, etc.- Fine workmanship and creative appearance ensure its popularity and practicality.Packing list: 2 x eyepiece covers