Features: Brand new and high quality Protect Your Eyes: Telescopes eyepiece eyecup helps to establish a perfect distance between eyes and tentacles. Protect your microscope eyepieces and your eyes. Compatible: The inner diameter of the telescopes eyepiece eyecup is 22mm/0.87in, suitable for microscope eyepieces, monoculars and binoculars of 42-48mm/1.65-1.89in. Excellent Performance: The telescopes eyepiece glasses can provide better observation effect without interference from external light sources. Reduce shock and better protect your eyes. High Quality Material: The telescopes eyepiece eyecup is made of high quality rubber, which is foldable, wear-resistant, sturdy, not easy to damage, durable and practical. Quality Assurance: The telescopes eyepiece glasses have undergone strict quality testing and have stable performance, so you can buy with confidence. Specifications: Material: Rubber Inner diameter: 22mm Package Includes: 2Pcs x Telescopes Eye Cups note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!