uxcell Aquarium Flexible Rubber Air Curtain Bubble Diffuser Tubing 60cm Long Product Name : Aquarium Air Curtain Bubble;Material : Rubber Pipe Diameter(Approx.) : 1cm/ 0.4";Pipe Length : 60cm/ 24" Inlet Connector Inner Dia. : 2.4mm/ 0.09";Inlet Connector Outside Dia. : 4mm/ 0.16" Color : Black;Net Weight : 56g Package Content : 1 x Air Curtain Bubble