The Triac ST is the 7th generation hand tool manufactured by Leister. Its dependability and versatility make it the tool professionals ask for; Leister is the industry leader for a good reason, reliability and versatility. You might call it a gun, dryer, heater, hot air tool, or simply a welder; but make no mistake, the Triac ST is the tool you want and the tool you need. TRIAC ST: Weld thermoplastics, and individual thermoplastic elastomer and bitumen plates, pipes, profiles, sealing layers, coated fabrics, foils, foams, tiles and layers Heat thermoplastic components for forming, bending and coupling Dry moist surfaces Shrink heat-shrinkable sleeves, hoses, connectors and packaging for electrical components Solder copper tubing, solder connectors and metal foils Defrost frozen water lines Activate/dissolve solvent-free and hot-melt adhesives Ignite wood chips, paper, coal or straw in furnaces.