Built to withstand the most harshest of conditions, it will easily light any Flammable gas. Constructed of heavy, high tensile strength steels, plated and then galvanized. They feature a round file and large hood for trapping flammable gases making for easy ignition. The round file can be rotated for a fresh striking surface. The traingle flint holder is easily rotated for fresh flint and can be replaced when needed. Replacement flint is available seperately.