Features:
Carbon dioxide bottle cap homemade CO2 aquatic fish tank DIY generator.
Suitable for all carbonated beverage bottle mouths, regardless of size. For example, Cola, Sprite, Fanta, Qixi, Mei Nida and so on. (Please note that juice bottles and mineral water bottles must not be used)
The special sealing ring for the cap is made of imported silica gel, which is resistant to acid and alkali.

Specification:
Type: Carbon Dioxide Generator
Material: PC polyester
Applications: Aquarium Fish Tank Adjust Carbonated Beverage Preservation
Features: Carbon Dioxide Generator, Aquarium CO2 Generator, Preservation Bottle Cap, Tank Regulator Accessories
Dimension: app.3.5cm/1.38in
Color: White

Note:
1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.
2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!

Package includes:
1 Pc x Carbon Dioxide Generator