3-Pack of red lenses are designed to fit in D-cell angle flashlights for a reliable light source while in the field or on a tactical excursion. While traveling in the dark, red light is the ideal choice as it will conceal your position and preserve your vision while using night vision gear. Constructed with a durable polystyrene material, each red lens measures 1 5/8” in diameter. This three-lens pack is ideal for military and tactical personnel.