Check the listing for details. LTKJ 2PCS 34 Mm Inner Diameter Eye Guards Microscope Telescope Eyepiece Eye Pie. Condition: New. Listed at 17.99 USD. 【Size】- Inner Diameter about: 34 mm.Height: 30mm/23mm【Material】- Made of high quality of soft plastic rubber.【Feature】- Ox horn shape,Suitable for stereo microscope 30mm aperture eyepieces and telescopes and other 32-35mm lenses.Providing extra comfortable for eyes.【Application】- It applies to WF10X eyepieces and compound microscope eyepieces, and for 32- 35mm eyepiece of the microscope and telescope and other lens, etc.【Package】- Package inludes 2pcs rubber eyepiece cover guards.The eyepieces are not included, just the eyecups! Brand New Pair of Microscope Eye Guards that fits 32mm-35mm at the Top Work great for WF10X Eyepieces Also work great for Compound Microscope Eyepieces Specifications: Providing extra comfortable for eyes Fit eyepieces with diameter of Φ32mm~Φ35mm at top Help protect your eyes from the light Packing List: A Pair SOFT Rubber Eye Guards