uxcell Suction Cup Design Aquarium Air Stone Bubbles Wall Tube, 7-Inch Aquarium Bubble Wall Air Stone Tube; Suitable for : Tank, Aquarium Shaped : Tube Design; Material : Plastic, Rubber, Polycyl Tube Size : 17.8cm x 0.9cm/7" x 0.35"(L*D);Color : Blue Net Weight : 9g Package : 1 x Bubble Wall Air Stone Tube2 x Suction Cup1 x Air Intake1 x Stopper