Ultimate Survival Technologies Mag Bar Fire Starter Magnesium Metal Fuel Technology The UST Mag Bar Fire Starter is a magnesium metal bar paired with a blade to gather shavings in a pile and then light them with sparks from the flint edge embedded in the magnesium block. Magnesium metal is flammable, burning hotter and longer than wood tinder, and providing a flame to build a larger fire or generate light. The surface of the bar is oxidized so the magnesium is not flammable until you carve out metal shavings, piercing the oxidation layer and exposing flammable metal. Self-Sustained Fire Starting Tool An entire fire in a compact metal block, providing fuel, flint, and a sparking blade in a 3" magnesium bar. Carry this on your next camping trip as a fuel-free survival tool, or keep it handy for emergencies by securing it to a keychain.