Product Description Ferrocerium rod is made from Iron, Magnesium and mostly of an alloy of rare earth metals called mischmetal with an excellent pyrophoric percentage : 98%min. Specifications: • Material: Ferrocerium • Diameter of lanyard hole:4mm/0.16inch • Diameter of Ferrocerium rod:8mm/0.31inch • Length of Ferrocerium rod: 80mm/3.1inch Package List: • 1/5x Length:3.1 inch &Diameter: 0.31inch Drilled Ferrocerium rod .