The Weller 100-watt/140-watt soldering gun kit produces 100-watt or 140-watt heat and comes with 3 different tips for a wide variety of general soldering applications. It is ready to use in just 6 seconds and features a fingertip trigger with a heat-output selector. It offers a comfortable pistol-grip design and a built-in spotlight for illumination. The entire kit fits neatly in its own carry case.