The G/3U is a miniature soldering iron handpiece. The model G is a 18W, 115V soldering iron. This Miniature Soldering Iron is equipped with a 3 wire, grounded, ultra flexible cord with a 3-prong plug. The G/3U is the heaviest duty, highest wattage miniature soldering iron on the market today and puts out as much power as a conventional 30 Watt iron but is much lighter and easier to handle. Each iron features a heating element directly under the tip for optimum thermal efficiency. Distributing the power right where it is needed. - There are more than 50 special solder tips (140 Series) available that slide-on directly over the heating element. The G/3U is designed for faster heat up, quicker recovery times and a cooler handle. The G/3U has a shortened distance from your fingertips to the end of the tip, this was done to give the operator greater control and accuracy. It only takes 45 seconds to heat to working temperature. The G/3U is rated for working temperatures of 700 to 750 °F.