Flip Open Eye Piece Lens Cover, Size #13
Part Number #BC-EYE-13
Diameter - 39.9mm (1.57")

Butler Creek - Simply the ultimate scope lens protection for hunters and shooters. They’re custom-fit to your scope, create a watertight, airtight seal, and open with a touch of your thumbs, so you can put your shot through the narrow window of opportunity in the most extreme conditions.

Fast, flip-open design – keep your eye on the target
Silent spring hinges won’t spook game
Water-tight, custom-fit friction mounts anchor them to your scope
Air-tight semi-O-ring keeps out dust and moisture
Tested to –40°F
Truly ambidextrous