5 PCS Home Fish Tank Black Red Aquarium Check Valve Air Pump Co2 System One Way Non-Return

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

1X 5 PCS One Way no return Check Valve