The most commonly used essential accessories for fish tanks, why not reserve one set for your aquarium air pump? A complete and high-quality accessories set can make your air pump re-run quickly, keep your aquarium constantly oxygenated, and your fish will always grow healthy. You don't need to look for accessories one by one from the various dazzling brand, much more convenient and time-saving. Specifications of Airline Tubing: Inner Tube diameter: 0.2 inch / 4 mm Outer Tube diameter: 0.24 inch / 6 mm Airline Tubing Length: 80 inch / 2 m Package Includes: 1 x Airline Tubing (80 inches, 2m) 2 x Air Stone 2 x T-connector 2 x Y-connector 2 x Straight Connector 2 x Non-return Check Valve 4 x Suction Cup