Durable 10Pcs Plastic Aquarium Non Return One Way Check Valve Air Pump CO2 System Fish Tank Increasing Oxygen Pump Accessories

Battery Included : No High-concerned chemical : None Material : ABS Plastic Model Number : 04380,04381 Tube Calibre : 4mm Power (W) : 4W Origin : Mainland China Type : fish Product name : One Way Check Valves Size : 4mm Inner Diameter Color : Red,Black Application : Aquarium air pump,Garden Irrigation Pump,Fish Tank,etc