Drilled Ferrocerium Rod Flint Fire Starter Toggle &ndash; 2 Holes Drilled &ndash; 5, 10, & 20 Packs Diameter: 5/16 (8mm) Length: 1 Inch Material: Ferrocerium Diameter of Drilled Hole: 4mm Great for attaching to gear, clothing, key chains, Paracord creations, and much more!