Lens type:Objective LensMaterial type:RubberBatteries included?:NoPackage Dimensions:16.6 x 11.3 x 2 cm; 100 Grams1.Please measure the Outside diameter (including armouring) of the barrels to get accurate sizing,Fits tube with outer diameter 50~52mmTotal 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 .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 .We Will Provide After-sales Service Until You Are Satisfied.