The Importance of Nozzles
The so-called Volcano hot ends are specifically designed for higher speeds and temperatures, with claims of processing at least three times more plastic than the regular V6 hot ends. For such reasons, Volcanos require a lengthier nozzle, usually 21 mm from end to end, to promote better thermal conduction.
SuperVolcano
The third size option, although rarely seen in stock 3D printers, is the SuperVolcano. As the name implies, it is an even longer version of the Volcano nozzle, measuring an almost ridiculous 50 mm in length. To handle such enormous dimensions, the heater cartridge is rated for 80W and can reach temperatures of 500 °C.