Features 1、Premium Material: Telescopes eye cups are made of rubber, which is safe, non toxic, environmentally friendly and sturdy, and has a long service life. 2、Excellent Observation Effect: After adding telescopes eye cups, there is no external light source interference, and the observation effect is better. 3、Applicable: Eye Cups have an inner diameter of 27mm/1.06in, and are suitable for 29‑32 mm/1.14‑1.26 in microscope eyepieces, monocular binoculars and other eyepieces. 4、Eye Protection: Eye cups help to create the perfect distance between eyes and tentacles, aiming to reduce the impact and better guard your eyes. 5、Easy to Store and Carry: Rubber eyepiece cover is foldable, easy to carry and store, easy to use, sturdy and practical. Specification Item Type: Eye Cups Material: Rubber S Size Horn Eye Cups Inner Diameter: Approx. 27mm/1.06in Suitable for 29-32mm/1.14-1.26in Lens Package List 2 x Eye Cups