Check the listing for details. Solar Filter Film for 44-210mm Telescope Objective Lens Safely See Solar Eclipse. Color: Sliver, Condition: New. Listed at 21.84 USD. 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. Do not look directly at the sun without the protection of the solar filter.4. Suitable for 44-210mm telescope. Specification: Item Type: Solar Filter Material: PET+Aluminum Foil Coating Border material: aluminum alloy Screw: M5-16mm 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 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. Package List: 1 x Solar Filter 3 x Screw