Built to withstand the harshest of conditions, it's the toughest spark lighter made and it's designed for the toughest jobs. Can easily light any flammable gas. It is manufactured of heavy, high tensile strength steels, plated and galvanized. This lighter is the favorite of the heavy construction and petroleum industries. Like all Shurlite lighters, the 4501 is guaranteed to spark vigorously and reliably. The triangular flint holder may be easily rotated for a fresh flint, and is easily replaced with a Shurlite three flint renewal.