Pack of 10 solar filter observation glasses.;Suitable for naked eye observation of solar eclipses, large sunspots, Venus/Mercury transists without a telescope.;The sun will appear in a natural orange color when viewed through this filter.;Black polymer is the most common filtering material for observing the sun safely.;These viewers are a quality product of Thousand Oaks Optical, Arizona, USA. A manufacturer of safe solar filters for over 30 years.
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