Product DescriptionProtect your optic with the Butler Creek Flip-Open Objective Scope Cover. Built from durable black polymer, this cover forms an airtight, watertight seal to keep dust and moisture out, yet opens instantly with a thumb press so you never miss the shot. The silent, spring-loaded hinge prevents spooking game and the cover has been tested to withstand extreme cold down to -40AdegF. This Size 13 cover fits objective bells measuring approximately 1.53 inches (38.9 mm) in outside diameter, with a fit range of .01 inch under to .025 inch over the listed measurement.Product HighlightsInstant, flip-open design with a quiet, low-profile hinge for fast target acquisitionAirtight and watertight seal protects the objective lens from dust, dirt, and moistureDurable black polymer construction built for field useCold-weather tested to -40AdegF for reliable performance in harsh conditionsSize 13 fits objective outside diameter of about 1.53 in (38.9 mm); easy slip-on installationSpecsProduct Type: Flip-Open objective scope coverSize: 13Compatible Objective Outside Diameter: 1.53 in (38.9 mm)Material: PolymerColor: BlackWeight: Under 1 oz (approx.)Fit Range: 0.01 in under to 0.025 in over stated sizeOperating Temperature: Tested to -40AdegFUPC: 051525301301MPN: 30130Brand: Butler CreekDisclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product's manufacturer.