Lens type:Objective Lens Material type:Rubber Batteries included :No Package Dimensions:16.6 x 11.3 x 2 cm 100 Grams 1.Please measure the Outside diameter (including armouring) of the barrels to get accurate sizing,Fits tube with outer diameter 50-52mm Total Protection: Binocular Lens Covers Are Waterproof, Scratch-resistant, and Abrasion-resistant, Providing Complete Protection For Your Objectives and Eyepieces. Strong and Durable: The Binocular Lens Covers Are Made of Rubber Material, Which Is Soft to the Touch and Firm to Use For A Long Time. Easy to Use: Simple Design, Easy to Use, Can Be Installed and Used Without Any Tools. Disassemble Without Leaving Marks to Protect the Telescope. Applicable: Objective Lens Caps Are Suitable For Eyepieces and Objectives of Binoculars, Please Confirm Your Own Binoculars before Purchasing. SHOP WITH CONFIDENCE: To Provide You With the Highest Quality Service, If You Have Any Question, Please Feel Free to Contact Us.We Will Provide After-sales Service Until You Are Satisfied. Total Protection: Binocular Lens Covers Are Waterproof, Scratch-resistant, and Abrasion-resistant, Providing Complete Protection For Your Objectives and Eyepieces. Strong and Durable: The Binocular Lens Covers Are Made of Rubber Material, Which Is Soft to the Touch and Firm to Use For A Long Time. Easy to Use: Simple Design, Easy to Use, Can Be Installed and Used Without Any Tools. Disassemble Without Leaving Marks to Protect the Telescope. Applicable: Objective Lens Caps Are Suitable For Eyepieces and Objectives of Binoculars, Please Confirm Your Own Binoculars before Purchasing. SHOP WITH CONFIDENCE: To Provide You With the Highest Quality Service, If You Have Any Question, Please Feel Free to Contact Us.We Will Provide After-sales Service Until You Are Satisfied.