Eyepiece flipup rifle scope lens covers What it is A set of plastic flipup lens covers that conform tightly to rifle scope tubes, protecting lenses from dust and abrasion. Color and material Color: transparent yellow Material: plastic Size options and compatibility Fits a wide range of scope tube diameters. Available sizes include: 46mm, 47mm, 48mm, 49.5mm, 50mm, 51mm, 53mm, 57mm, 58mm, 59mm, 60mm, 61mm, 62.2mm, 64mm, 65mm, 66mm, 67mm, 69mm In addition, additional sizes for compatibility: 30mm, 37.2mm, 38mm, 39mm, 39.8mm, 41mm, 42mm, 43mm, 44mm, 45mm Function and benefits Flipup design provides quick access to the lens when needed and protects the lens when not in use. Conforms tightly around the scope tube for a secure fit and reliable protection against dust and abrasion. Use scenarios 1) In the field during hunting or shooting in dusty, sandy, or harsh environments to keep lenses clear. 2) During transport or storage to prevent scratches and dust ingress. 3) On the range between sessions or reconfigurations to safeguard optics while swapping accessories or equipment.