Feature: 1. Using PET+aluminum foil coating, strong and durable, not easy to break, long service life. 2. Protect your eyes and safely observe the sun, sunspots, solar eclipses and planetary transits. 3. The high‑density coating provides the true color of neutral white in sunlight. 4. Do not look directly at the sun without the protection of the solar filter. 5. Suitable for 60/70mm/80mm/90mm telescope, a bmust‑have to safely observe the sun. Specification: Item Type: Solar FilterMaterial: PET+Aluminum Foil Coating+ABSColor: As Picture ShownInterface Size: Approx. 60mm/2.4in, 70mm/2.8in, 80mm/3.1in, 90mm/3.5inFilm Diameter: Approx. 100mm/3.9inObjective Lens Cover Diameter: Approx. 120mm/4.7inWeight: Approx. 75.0g/2.6ozFit for 60/70mm/80mm/90mm telescope How to use:1. Use the film to face the sun, check to see if there is light leakage, if there is light leakage, it is strictly forbidden to use 2. After the detection is completed, put the film cover on the light inlet, check the fixation, and measure the light at the eyepiece after it is intact, and the operation can be performed without abnormal light. 3. During the observation process, the membrane cover should not be moved by the nearby personnel.. Package List: 1 x Solar Filter3 x Screw Note: If the product film is damaged, do not use it to prevent eye damage.