FOSTEX BCB STRIKER FIRE FLINT MAGNESIUM BLOCK
Tradional flint adhered to a magnesium block. Scrape shavings off the magnesium block with the hacksaw blade. Then ignite it by strikings sparks on the magnesium with the knife along the flint. The shavings of the magnesium block burn easily and become very hot, which is the ideal way to start a fire.