Uxcell Rubber Tube 9mm Dia Aquarium Air Curtain Bubble Diffuser, 48-Inch, Black Aquarium Air Curtain; Material : Rubber, Plastic Tube Diameter(Approx.) : 9mm/0.3";Tube Length(Not Included Connector ) : 122cm/48" Connector Size : 4 x 2mm/0.15" x 0.07"(Outer Dia*Inner Dia);Color : Black Weight : 140g Package Content : 1 x Air Curtain Bubble