LSD (Pack of 4) Big Size 12.7mmx12.7cm Ferrocerium Rod Flint Fire Starter Lighter Magnesium Tool Kits Camping Hiking Survival Outdoor Black Useful 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. Great wear time and strong spark! Light Weight and easy to carry. Diameter: 1/2"(12.7mm) Length:5"(12.7cm) Material: Ferrocerium