The Exotac nanoSTRIKER is very small, very durable ferrocerium firestarter. In fact it is likely the smallest and most durable firestarter available anywhere. The collapsible device measures only 3.3″ closed but is easily unscrewed and assembled into a highly capable rod with striker. The Exotac website has some excellent diagrams and videos about the nanoSTRIKER. The nanoSTRIKER is an excellent choice for EDC or a Bug-Out-Bag / Evac-Pack but we’ve also found them perfect for a small survival kit in the buttstock of our M1As.