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

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

1X 5 PCS One Way no return Check Valve