MagSlab Magnesium Fire Starter Genuine FireSteel.com FireSteel, Magnesium Bar, and Super Scraper. Huge robust sparks that you expect from a FireSteel.com FireSteel Built-in FireSteel.com FireSteel that makes 5500 F (3000 C) sparks that will start a fire in the toughest conditions: 3/16ths inch diameter x 3-inches long FireSteel.com Super Scraper - specially designed to maximize the amount of sparks from your FireSteel, also useful for scraping shavings off the magnesium slab. 5500 F (3000 C) sparks that will start a fire in the toughest conditions