The Bondtech CHT Volcano nozzle has a brass coating and is highly resistant to corrosion. In addition, the friction is low, so that filament is extruded smoothly. It is suitable for filament with a diameter of 1.75mm, but also compatible with 2.85mm filament.
Unique to these Bondtech CHT nozzles is that they split the filament into 3 thin strands, so that the filament melts faster and higher flow rates can be achieved. This is a 5-pack.