Ferrocerium Fire Starter Exotac Polystriker Xl. INSTANT FIRE: Strike the Ferro rod with the provided tungsten carbide tool for instant fires; ditch complicated fire starters for this essential survival gear. QUALITY DESIGN: The all-in-one function of polySTRIKER blends lighter materials using recycled ABS plastic and quality metals. The tungsten carbide striker is the same material presented in the Exotac nanoSTRIKER. 5/16-INCH FERRO ROD: The polySTRIKER XL is the largest and easiest Ferro rod to use with a waterproof design and ability to supply up to 10,000 fire-starter strikes. MINIMALIST DESIGN: The polySTRIKER XL features a snap-in tungsten carbide striker that fits right into the handle, folding small enough to fit in any pocket, backpack, canister, survival kit, etc. MADE IN THE USA: All of our products are beautifully designed, masterfully forged, and hand-finished in the USA.