Stainless is a much harder metal than brass, and stands up better to abrasive specialty filaments. They are also free of lead, which is present in brass nozzles. Use a stainless nozzle for periodic printing with advanced materials. Not manufactured or associated with E3D, but machined to the same design standard. Backwards compatible with nozzles older than v6.
The V6 nozzle is the most common size in use today, and fits a very wide range of common 3D printers. Check your documentation to verify compatibility before ordering.
Installation is simple, and generally consists of warming up the hotend, and supporting the heater block with an adjustable wrench while changing out the nozzle using a second wrench. Care should be taken not to over tighten. Refer to your printer's documentation.
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