Quantity: One piece (medicine is not included) [Safe and reliable] Committed to creating a fresh water environment. Use with chlorine or bromine tablets to purify water. Unique chlorine pool float design, no special exhaust system is required. The locking cap firmly fixes the chemical pill inside, providing a safer and more enjoyable swimming experience. [Floating on the surface] The adjustable chlorine diffuser floats on the surface of the pool to clean the water. Float and diffuse the chemical pills easily! Release the right amount of chlorine over time and distribute it evenly! Very safe, you don't have to worry about the chlorine content of the pool or spa. [Adjustable pool diffuser] Adjustable flow rate by pool chlorinator and the amount of chlorine you introduce. You can control the cleaning speed level. The medication flow rate can be adjusted according to the actual situation of the swimming pool, which is very practical. [Sturdy and Durable] The chlorine air float is made of high-quality ABS material, which is durable, corrosion-resistant, and reusable. It can be used in the swimming pool in summer, with high efficiency and convenient use. [Application] The SPA bromine diffuser is suitable for a variety of scenarios, such as swimming pools, inflatable pools, spa pools, aquariums, water parks, outdoor hot tubs, ready-to-use spas, etc.Good quality product