Description: Easy to install, just attached to an air pump. Low pressure is usable, suitable for any air pump. Rotary control design can adjust the size and density of bubbles. Made of high-quality plastic, non-toxic, safe and durable for use. Creates air bubbles, aids in increasing oxygen levels, lower CO2. Specification: Material: Plastic Bottom Diameter:Approx.3.5cm/1.38inch Height: Approx. 6cm/2.36inch Package Includes: 2 Pieces Air Diffuser 2 Pieces Sucker 4 Pieces Cotton Note: Since the size above is measured by hand, the size of the actual item could be slightly different from the the size above. Due to the lighting effects, monitor settings,etc.There could be some slight difference in the color tone of the pictures and the actual item
