LabStock Brand Jumbo Firesteel DIY Pack, 3/8 X 4 Inch, Set of 4
Made of the alloy ferrocerium, these rods have the property of producing very hot sparks when rubbed against a rough surface. The sparks are actually tiny flakes of molten ferrocerium with an extremely high temperature. Add a handle of your own design and you have your own unique fire starting kit.