RadioShack Selectable Wattage Soldering Iron Selectable 20W, 30W, 40W, 50W power settings. Tip heats from 554F (290C) to 900F (482C). Selectable wattage settings enable you to use this one iron for multiple soldering needs. Includes pencil-style tip and safety stand. UL listed -- UL has tested representative samples of this product and determined that it meets UL's requirements.