uxcell Soft Plastic Aquarium Fish Tank Airline Pipe Oxygen Hose Clear Green 2.5M Length Suitable to be used for Oxygen supply in all kinds of aquariums. Through installing an air pump the correct balance of oxygen and carbon dioxide will be established in the tank. Total Size: Length: 2.5M/8ft; Material: Soft Plastic External Diameter: 6mm/0.24";Product Name: Aquarium Air Tube; Net Weight: 47g Internal Diameter: 4mm/0.16";Color: Clear Green; Package Content: 1 x Aquarium Air Tube