Product Name: Fish Tank Aquarium Air Stone Bubble Wall TubeFeatures:100% brand new6 sizes for choice (Total length): approx. 7"(17.8cm)、 10"(25.4cm)、 14"(35.6cm)、 18"(45.7cm)、 23"(58.4cm)、 28"(71.1cm)Color: Blue、 GreenInstantly create a great deal of tiny bubbles that your fish will loveThe tube can be cut with a razor blade to be shortenAdditional bubble walls can be jointed with the enclosed connectorRubber suction cup can produce enormous power to stick to glass surface firmlyNeed to use a pin or needle to puncture for as many small holes as needed before usingTube Diameter: Approx. 1cmMaterial: Plastic and rubberIt is the best partner for pumpPackage Includes:1 x Aquarium Air Stone Bubble Wall Tube