Sharp-N-Fire Survival Carbide Sharpener and Spark Fire Starter and Whistle Scrape fire starter slowly to produce small pile of shavings; Place tender on pile of shavings and strike fire starter rod fast towards the shavings and tinder Hardened tungsten carbide sharpens: pocket knives, hunting knives, utility knives, broad heads, garden tools, hatchets, and more Pull knife blade down through the V carbide for fast easy sharpening or use the straight carbide edge to hone the cutting edge Easy to use, fast, pocket-size, and always with you Replaces traditional matches which can get wet, lost, or used up