Feature 1Using PET+aluminum foil coating, strong and durable, not easy to break, long service life. 2Protect your eyes and safely observe the sun, sunspots, solar eclipses and planetary transits. 3The highdensity coating provides the true color of neutral white in sunlight. 4Do not look directly at the sun without the protection of the solar filter. 5Suitable for 60/70mm/80mm/90mm telescope, a bmusthave to safely observe the sun.SpecificationItem Type:SolarFilterMaterial:PET+AluminumFoilCoating+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 for60/70mm/80mm/90mmtelescopeHow 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 use2. 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. .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x SolarFilter3 x ScrewNoteIf the product film is damaged, do not use it to prevent eye damage.