uxcell&reg; Fish Tank Air Oxygen Circulate Soft Silicone Flexible Pipe Clear 5M Product Name : Aquarium Oxygen Pipe;Color : Clear Material : Soft Silicone;Total Length : 5m/16.4Ft Internal Diameter : 5mm/ 0.20";External Diameter : 7mm/ 0.28" Weight : 80g Package Contents : 1 &times; Aquarium Oxygen Pipe