Fish Tank Air Diffuser Valve Guage Carbon Dioxide Reactor Generator Bottle Cap

Aquarium CO2 System Generator Bottle Cap Fish Tank Live Plant DIY Air Diffuser Tube Valve Guage Carbon Dioxide Reactor Quick Screw Part Accessories
Specification:
Material: Engineering Plastic
Size: 3.4*3.2cm
Function: Suitable for all kinds of DIY reactors, directly tightened carbonated beverage bottles, safe, durable, and air-tight.

Note:
1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!
2. Please allow 1-3mm measuring deviation due to manual measurement. 

1 X Bottle Cap