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These Solar Filter Inserts from JMI are a pair of durable solar filters that fit into the aperture openings of the JMI RB-66 reverse binocular telescope. Once installed, they allow safe viewing of the sun. They're manufactured from machine-polished optical glass elements that are triple-coated with a scratch-resistant nickel-chromium stainless steel alloy.
WARNING: Do NOT use any optical device for looking at the sun without appropriate solar filters. Doing so may cause permanent blindness.