Check the listing for details. AQUANEAT Aquarium Standard 3/16" Airline Tubing with Accessories. Condition: New. Listed at 6.99 USD. Key Product Features:•Airline tubing: standard 3/16" diameter common to most airline accessories•Air stones: durable and can produce fine bubbles continuously to diffuse oxygen efficiently in your fish tank•Check valves: place these air pump check valves in your airline tubing between your air pump and aquarium water to prevent water returning down the air line •Suction cups and T connectors: fit 3/16 inch ID standard airline tubingIncludes: Size/Color Airline Tubing Air Stone Check Valves T Connectors Suction Cups 14feet,clear 14feet,clear 2pcs,blue 2pcs,blue 2pcs,clear 6pcs,clear 25feet clear 25feet clear 4pcs,blue 4pcs,blue 4pcs,clear 12pcs,clear 14feet,black 14feet,black 2pcs,grey 2pcs,black 2pcs,black 6pcs,black 25feet black 25feet black 4pcs,grey 4pcs,black 4pcs,black 12pcs,black