Feature:1. FITS SIZE: Filter outer diameter: 76mm or 3in. Supported objective size range: 44 to 70mm or 1.7 to 2.8in. Aperture: 60mm or 2.4in. Screws: M5 16mm.2. ENHANCED PROTECTION: This solar film filter provides safety protection for your astronomical telescope lenses, preventing potential damage from the sun's brightness during solar observations.3. PET COATED ALUMINUM FOIL FILM: Made with premium PET coated aluminum foil film, this solar film filter is ideal for both eye observation and astronomical photography.4. RESILIENT AND EASY TO CLEAN: The solar film filter is resistant to damages and is suitable for long term use in various weather conditions. Cleaning is a breeze with a soft cloth or tissue paper.5. REDUCED LIGHT AND RADIATION: Our solar film filter effectively reduces light and harmful radiation while maintaining excellent contrast for better image quality and shooting the activities of sunspots with accuracy.6. DURABLE AND RELIABLE: This solar film features a dual sided bright silver thin film, providing enhanced durability and ensuring a safe observing experience. Do not use when leakage occurs.Specification:Item Type: Telescope solar film filterMaterial: Aluminium alloy, PET, aluminium foilWeight: Approx. 100g or 3.5ozOuter Diameter: 76mm or 3in.Package List:1 x Telescope Solar Film Filter