1 Product Details：ferrocerium rod Lengt: 6"(153mm),Diameter:1/2"(12.7mm),Rod Hole:4.5mm,ferro rod is a combination of flint and steel Step 1: Prepare some withered grass, leaves or paper. Step 2: Slow Scrape some magnesium from the lighter rod to the grass, leaves or paper. Step 3: Quickly Scrape the lighter rod, then it will have some spark to fire the grass, leaves or paper. Perfect emergency fire starter for Bush-craft, Hiking, Camping, Hunting, Fishing, EDC, Emergency, BBQ, Gas Camp Stoves, etc.