Oxygen air stone

Diffuser oxygen in four sizes.
The air stone is important for fish oxygen.
Soak the stone in water for fifteen minutes before use.
Clean regularly with a brush as they get clogged after months of usage.
 

Specifications

Sizes
The small diameter of 6cm and 2.3″
The medium diameter of 8cm and 3.1″
The large diameter of 10cm and 3.9″
The extra large diameter of 12cm and 4.7″
 
 
Notes
The real product colors may be slightly different from what you see in the images.
The product dimensions may be slightly different from what is written in the product specifications.