Orion 7405 1.25-Inch Standard Rubber Eyeguard Affordable rubber eyeguards fit over your telescope eyepieces to improve viewing comfort and performance Blocks annoying and distracting ambient light and helps you position your eye for a better observing experience Makes viewing through metal-housed eyepieces more comfortable and enjoyable - you won't want to stop observing! Especially useful with wide-field telescope eyepieces Stretches to fit most 1.25" telescope eyepiece housings