All In A Package: No Worry About Mismatching - Complete air pump accessories of airline tubing, air stones, connectors, suction cups and check valves for basic aquarium aeration setup. 13 Ft. Airline Tubing: Standard 3/16" ID airline tubing. Made of reliable frosty clear plastic, the hose is flexible and kink-resistant. Desired length for most fish tanks. 2 Air Stone Cylinders: 0.8" D x 1.2" H. Small size to be easily driven by even nano air pumps. Produce lots of medium bubbles to aerate your tanks and enliven the aquatic lives. 4 Connectors: Include 2 straight and 2 T-shape connectors to connect standard 3/16" ID tubing. Allow you to connect 1 or more air inlets to create 1 or more outlets. 6 Suckers 2 Check Valves: Soft clear plastic holders fit 3/16" ID hoses and can stick tightly to the smooth tank. The check valves can effectively prevent back siphoning of water. Product description Pawfly specializes in all must-haves of aquarium accessories such as air pumps, water pumps, air stones, sponge filters, fish nets, cleaning brushes and other accessories to set up your aquariums. Complete Aquarium Accessories Set The essential accessories kit includes 13 ft. frosty clear tubing, 2 air stones, 4 connectors, 6 suction cups and 2 check valves, all of which suit air pumps with 3/16" outlet ports and help build the basic aeration setup in your aquariums. The accessories set thoroughly eliminates your worry about mismatching your air pump and frees yourself from looking for them 1 by 1 among vast dazzling items. Considerably reduce repeated trial to save your valuable time. Air pump accessories set 13 ft. 3/16" airline tubing 2 small air stone cylinders 4 connectors in 2 shapes 6 soft clear suction cups 2 red non-return valves For basic aeration setup Fish Tank Accessories Set Complete standard set of aquarium accessories for most air pumps. Include 13 ft. airline tubing, 2 air stones, 4 connectors, 6 suction cups and 2 check valves. 13 Ft. Airline Tubing The standard 3/16" frosty clear tubing is flexible and kink-resistant. Made of reliable plastic which won?t affect the health of your lovely fish. 1.2" Air Stone Cylinders With constant jetting volume of 1.3 L/min, each bubbler produces numbers of medium bubbles bursting steadily to increase oxygen level in your tank. 4 Connectors in 2 Shapes 2 straight connectors can extend or mend a hose. 2 T-shape connectors split or combine inlets to create more outlets to run several air stones or filters. 6 Strong Suction Cups Excellent holders for standard 3/16" ID hoses. They stay firmly either outside or inside the tank. Each sucker comes with a clip for adjusting tubing. 2 Non-return Check Valves The red plastic check valves can effectively keep aquarium water from back siphoning to protect your air pump during power outage.