1Made of rubber, that will be durable and lightweight to carry 2Can protect ocular or objective lens from damaging or fracturing 3Efficient to prevent dirt or dust to enter, and keep your lens clean when not use 4The hinged flip design can help you easily operate 5Available in a wide range of sizes fit for different rifle scope Dustproof scope cover is a simple but effective accessory. It is made of rubber, that will be durable and lightweight to carry. The scope cover can protect ocular or objective lens from damaging or fracturing.And it can prevent dirt or dust to enter, and keep your lens clean when not use. The hinged flip design can help you easily operate. Available in a wide range of sizes fit for different rifle scope. Features: Made of rubber, that will be durable and lightweight to carry. Can protect ocular or objective lens from damaging or fracturing. Efficient to prevent dirt or dust to enter, and keep your lens clean when not use. The hinged flip design can help you operate easily. Available in a wide range of sizes fit for different rifle scope. A simple but effective accessory for your scope. Specifications: Material: Rubber Color: Black Diameter: Approx. 32mm or 1.3inch, 42mm or 1.6inch, 44mm or 1.7inch, 48mm or 1.9inch, 50mm or 1.97inch (optional) Weight: Approx. 12-21g Package Included: 1 x Dustproof Cover Please Note: 1. Please allow 1-3mm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please in kind prevail.