This is D-518 Mini CO2 Bubble Counter for Aquarium. It is new and high quality never used. It is good choice for you!

Features

• New and high quality
• This CO2 bubble counter is accurate and the number is easy to read
• It should be used with the diffuser and check valve
• Fit for all kinds of aquarium
• Material: Plastic

Package Includes

• 1 x D-518 Mini CO2 Bubble Counter For Aquarium
• 1 x Rubber sucker