Ultimaker 2 Nozzle – ‘JET’ RSB 0.25mm
The brass Jet nozzles have a special tip angle and shoulder width, they also have a special internal geometry with an angle less steep down to the nozzle hole. A special treatment applied inside also makes them slip more. You can print 3°c to 5°c lower because of this treatment, this is also usefull for oozing and drips.
With these special nozzles you can print faster, the plastic will flow much more easier than in classic nozzles. You can also clean them very efficiently with cold pulls (or atomic pulls). The geometry of the inside makes it easier to get rid of plastic so changing colors or filament type is done faster and safer.