The shurlite #4501 is the spark lighter that's built to withstand the harshest of conditions. It's the toughest spark lighter made and it's designed for the toughest jobs. The #4501 will 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 #4501's triangular flint holder may be easily rotated for a fresh flint and when all three flints are finally gone, the flint assembly is easily replaced with a SHURLITE three flint renewal. The #4501 features around file made with our secret SHURLITE process and a large hood for trapping flammable gases for easy ignition. Unlike competitive products, the hood or cup will not fall off when dropped and the round file may be easily rotated for a fresh striking surface. Every single #4501 lighter is made in America by proud American workers and every lighter is tested by a human being prior to shipment for guaranteed quality.