Protect your equipment with our Silicone Lens Covers, to fit eyepieces with inner diameter of 52-55mm;objective lens with inner diameter of 61-63mm. Craft from durability silicone, these lens covers offer flexibility and a snugly fit, ensuring protections against and scratches for telescopes and microscopes. Suiatble for amateur astronomers, hobbyists, and professional who rely on precise opticals for their work or leisures activity. for use in laboratories, observatories, or even home, these covers keep your devices and ready for use at any time. Enhances the longevity of your valuable instrument with these easy to use and reliability lens protectors, accessories for anyone serious about maintaining their gear.