Vktech One Way Check Valve Aquarium Fish Tank Water Co2 System Air Pump Air Line 10 Pcs
DESCRIPTION :100% Brand New and High QualityGreat one way check valve for aquarium air pumpProtect you air pump by preventing aquarium water from back siphoning during a power outage.Small and compactMade of durable plasticIt's easy to installCompatible with standard aquarium air pipe of 4mm inner diameterINCLUDED :10 x One Way Check Valve Air Pumps