TACSHIELD Tactical Light Sticks are manufactured to exacting tolerances to ensure dependable bright lighting with an extended storage life. The various colored light sticks are used to identify specific areas/zones, unit colors, personnel marking and many others. Special hang clip makes it easy to attach. These 6 inch lights provide 12 hours of dependable use. All light sticks are 100% waterproof, non-flammable and non-toxic. They produce no heat or sparks. Just bend the stick and shake for full brightness.