Butler Creek's Flip-Open Scope Cover Ocular is 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 thumb, so you can put your shot through the narrow window of opportunity in the most extreme conditions.
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Measure the outside diameter of the ocular end of the scope. Fit range is .01" under to .025" over these measurements.