This series of fountain nozzles are the most widely used in the world of water feature fountains. The output diameter varies with the threaded connector (male or external thread). They are manufactured from calibrated brass piping. They are also fitted with one or two inner jet cut-offs (depending on model) that ensure the optimal quality of the water jet up to the heights. They also have a smooth ball joint that can reach a maximum slope of 20°, thereby enabling parabolic jets to be designed with no additional parts. Small and medium sizes (4 to 10 mm outlet) are suitable for indoor architectural fountains, while 10 to 19 mm diameter outlets are most suitable for outdoor use.