Flint adhered to a magnesium block.
Scrape shavings off the magnesium block with the hacksaw blade.
Ignite these by striking the blade down the flint showering sparks onto the magnesium.
This burns readily and very hot so is an ideal catalyst to ignite your tinder.
Can be used for starting thousands of fires.
Size: 7.62cm (3”)
Weight: 15g (I/2oz)