Check the listing for details. Aquarium Air Line tubing Kit,T-Valves+Control Valves+Conn Valves+Airstone+Cups+. Condition: New. Listed at 5.99 USD. Aquarium Air Line tubing Kit,T-Valves+Control Valves+Connector Valves+Stone+Cups DESCRIPTION:5 FT Durable Standard air line tubing1X Air stone 2x Three Way Durable Clear Plastic T-Valves 2x Air Control Valves. Color may vary on current stock. 2x Air Line Tubing Connectors1x Check Valve2x Air line Suction Cups Easy To Install/All standard sizes. Great combination kit to cover multiple ways of starting or setting up your existing tank. Air line length recommended for tanks under 50 gallons. You can use the connector valve included to add another air line if needed. For larger tanks see our larger tank kit also available for sale here on Ebay. See our pictures above for creative designs and uses or use your own creativity. Combined Shipping On Multiple Orders.Free and Lightning Fast Shipping From Within the USA.Great Feedback! Check out our other aquarium items currently up for sale here on Ebay.