5 PCS Circulate Plastic Fish Tank One Way Non-Return Air Pump Aquarium Check Valve Co2 System

Label:Yes Great one way check valve for aquarium air pump Price difference quality is huge different for this item quality Small and easy to install Color: Black Transparent;Red Transparent 100% Brand new and high quality The necessary parts for your air pump aquarium O2 system Size: As The Shown Protect you air pump by preventing aquarium water from back siphoning during a power outage. Material: Plastic Compatible with standard aquarium air pipe of 4mm inner diameter Made of durable plastic

1X 5 PCS One Way no return Check Valve