Designed for transporting flammable liquids in vehicles over highways or roads, these durable cans meet D.O.T. and U.N. Reference 49 CFR Part 178 requirements. Special roll bar safety guard protects the valve and filler cap against damage during transport or use and a fusible element in the fill spout is designed to melt and expose vent holes to relieve any internal pressure build-up if temperatures exceed 71 degrees C (160 degrees F). Constructed of rugged ZIACOTE coated steel. A 19mm (3/4″) flexible metal nozzle is standard.