uxcell Aquarium Air Stone Suction Cup Bubble Wall Tube, 18-Inch, Blue Aquarium Bubble Wall Tube; Material : Plastic, Rubber, Polycyl Connected Tube Size : 46cm x 0.9cm/18" x 0.35"(L*D);Color : Blue Net Weight : 17g Package : 2 x Bubble Wall Tubes 3 x Suction Cups : 3 x Suction Cups