A little tricky
The instructions say to use your knife. This will dull the blade of knife a bit. Guess you need to decide if its either a sharp knife or a fire if truly a survival situation. It comes with a small steel striker which can be used in place of knife but very small size makes it hard to hold and use. They also don't tell you that both the magnesium and the sparker bar is coated with something and you will get nothing until the coating is scraped off. After a little practice it works quite well.
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