Plastic air curtain bars provide even air distribution and can be changed into various lengths.This air vent is comprised of 6pcs of bars which could be connected with connectors. Simply enhance your aquarium's visual effect with this air vent.Create bubbles in fish tank while attached to an air pumpClear-look bars， making better apparent for your tankBubbles will be dispensed equally along the pipeProvide better water movement and aeration for your aquariumLength adjustable according to your needsIndividual Bar Length: Approx. 3.6 inchLength When Fully Connected: Approx. 25 inchMaterial: PlasticColor: TransparentPackage Included:6 x Air Vent Bars6 x Connectors2 x Suction Cups1 x Elbow Connector