3.5" overall. 1.6oz. Knurled black aluminum casing with composite flint steel magnesium rod that is easy to use and provides tremendous fire starting power. O-ring sealed. Built-in super alloy striking blade can be used as a life saver if separated from knife or pack. A must have for outdoorsmen, campers, hikers, hunters, kayakers, pilots and fishermen. These fire starters are endorsed by The Navy Diver Challenge put on by the Navy Seals. Hang packaged.