Usage Tips:Description This objective lens cover is made of premium rubber material, which can withstand long-lasting use. Features the rubber material, which has high durability, not easy to deform. Fine workmanship, ensures practicality, effectively protects the telescope lens. Features - Color: Black. - Material: Rubber. - Size: 12.00X6.00X1.00cm/ 4.72X2.36X0.39inch.- Note: objective lensinner diameter51.71mm, objective lensouter diameter45.40mm;eyepieceinner diameter41.11mm,eyepieceouter diameter44.88mm. - Protecting the telescope lens from dust, scratch, bump, excellent and practical for you.- Easy to put on and simple to remove, will not affect binocular performance, convenient and useful.- Replace your old or broken objective lens cover with one, useful and safe for binoculars.-Simple in structure, easy to use, strong and excellent, good protective effect, you can use it with confidence.- Small and compact size, light in weight, you can carry and use it wherever you go. Packing list: 1 Set x Rubber Objective Lens Covers