High quality Advanced Precision CO2 Brass Bubble Counter regulator mount. 

Key Features:

• Clear and precise bubble formation allows you to count bubbles with ease.
• Built in check valve to prevent damage from water or CO2 liquid flowing back into your regulator.
• Metal cap for CO2 tube attachment.
• 1/8" NPT Female Thread Connection (fits onto standard CO2 needle valve).
• Made by Intense, a well known brand for reliable, most efficient and built to last CO2 products.

What else do you need to get to supply CO2 to your aquarium?

• CO2 Regulators
• CO2 Tubing & Check Valves
• CO2 Diffusers
• CO2 Drop Checkers