uxcell 28" Long Bubble Wall Air Stone Tube Aeration Green 2 Pcs for Fish Tank Aquarium Product Name : Bubble Wall Air Stone Tube;Suitable for : Fish Tank, Aquarium Fit for Aquarium Oxygen Pipe External Dia. : 6mm/ 0.24";Design : Tube Shaped Material : Plastic, Rubber;Total Tube Size(Jointed) : 70 x 1cm / 28" x 0.4" (L*D) Color : Green;Total Weight : 85g Package Content : 2 Pcsx Bubble Wall Air Stone Tube