1/8 MEG threaded nozzles are the proper choice for all Mosmatic products including duct spinners and surface cleaners.
15° nozzles cover the smallest area so they have the hardest impact per square inch. 25° nozzles cover a larger area with a reduced impact. 40° nozzles cover the widest area with the lowest overall impact per square inch of the three.
For pressure washing with surface cleaners or duct spinners, more than half of all contractors choose 15° nozzles for greatest impact.