Feature: -The spring bubbling fountain nozzle is also a kind of aerated nozzle, also known as a bubble nozzle , pearl nozzle. -Maintain a certain height when spraying water, the water column is thick and straight, the water column that emerges from the water surface has strong three-dimensional effect, no suction pipe, and the lighting effect is obvious. -It is called Bubbling or Universal Spring Nozzle and is a popular effect used in homes,hotel,garden,park,public square, commercial and architectural fountains. Specification: Product: Spring bubbling fountain nozzles Type: 1/2 inner thread to 3/4 extral thread (DN15 DN20) Material?Brass Package Content: 1 pc fountain nozzles