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

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

1X 5 PCS One Way no return Check Valve