'Heat Gun' is a very general term applied to several different kinds of hand tools. They all have certain similarities, and as the name implies, all produce heat and can be handheld, often like a gun. The most usual type works on the same principles as a hairdryer, employing an electric heating element and a fan. Heated air typically reaches temperatures of around 500 degrees Celsius, although sometimes considerably more, and is directed towards the area to be heated, via a nozzle. The nozzle tip may offer a variety of different shapes depending on use. Some of the higher powered versions are described as hot air blowers and many of these are suitable for high precision work via small nozzles. Gas powered versions are also available, offering greater portability and typically higher temperatures. Heat guns have a wide range of uses in many trades and industries and have largely replaced traditional blowlamps for paint stripping. They are also suitable for soft soldering, plastic welding, heat-shrink tubing and shrink-wrap packaging, and can be used for de-soldering and reworking of circuit board components, but should not be regarded as an alternative to an electric or gas soldering iron. Accessories for heat guns, such as specialised nozzles, are also available.