Cyalume Emergency LightStick with 1 End Ring, 12 hrs Illumination, 15" Length, Green (Case of 75) The only lightstick that activates on impact, providing instant illumination Recommended for area lighting, evacuation, confined space lighting, vehicle repairs, building searches, bundle drops, refuel/rearm sites, and hazard markers Stock up in preperation for hurricanes, tornados, earthquakes, blizzards, blackouts and other disasters Non-toxic, non flammable, environmentally friendly Providing 12 hours of illumination