Replaceable Ferrocerium rod works well when wet. Diameter 0.43". Length 3.65". Lightweight and portable. Ultra-sharp tungsten carbide striking tool. More than 3000 fire-starting strikes per rod. Textured, lightweight 6061 aluminum body. Keyring and lanyard included. Weight 0.95 oz. Note: The striker handle for the XL version NanoSTRIKER is 46% bigger, than the original nanoSTRIKER making it easier to grip. The Ferrocerium rod is also 33% larger than the original nanoSTRIKER which improves the durability and lifespan of the rod. Gunmetal body.