This is the Blue Green Fish Tank Aquarium Decor Air Stone Bubble Wall Tube 23".

Product Features:
100% brand new and high quality
Instantly create a great deal of tiny bubbles that your fish will love
Rubber suction cup can produce enormous power to stick to glass surface firmly
Total Length: Approx. 23"/60cm
Tube Diameter: Approx. 1cm
Color: Blue
Material: Plastic + rubber + paper
It is the best partner for pump

Package Include:
1 x Bubble Wall Tube