uxcell 17.7" Length 11mm Dia Rubber Tube Aquarium Air Curtain Bubble for Fish Tank Product Name : Aquarium Air Curtain;Material : Rubber, Plastic Tube Diameter(Approx.) : 11mm/ 0.4";Tube Length(Not Included Connector ) : 45cm/ 17.7" Connector Size : 4 x 2mm/ 0.15" x 0.07"(Outer Dia*Inner Dia);Color : Black Weight : 78g Package Content : 1 x Air Curtain Bubble