The perfect Air Pump Accessories Our 15-in aquarium air pump valve kit includes: 1 4m/13ft standard aviation pipe, 2 cylindrical air stones, 2 red stop valves, 6 suction cup clamps, 2 straight connectors and 2 T-connector. The complete tool is perfectly matched with your aquarium, so that your aquarium can work better, and a sufficient quantity can meet your different needs. 4m Transparent Aviation Tube The aviation tube is made of transparent and soft plastic, which has good anti-wear and anti-kink functions, is not easy to break, and guarantees long-term use. The transparent appearance allows you to better observe its working conditions in the fish tank. With a length of 4m and a width of 5mm, it is suitable for most fish tanks. Straight and T Connector & Suction Cup with Clip The kit is equipped with two different shaped connectors, T-connectors can combine two inputs to create a stronger output. The straight connector can be used to repair or extend the air hose. Equipped with a suction cup with a clip, the shape and position of the airline can be easily adjusted, and it can be firmly fixed on the surface of the fish tank. Cylindrical Gas Stone & Red Check Valve Air stones can dissolve oxygen, generate a large number of bubbles and absorb carbon dioxide. It can extend the life of the nutrient solution and provide continuous oxygen to the fish and other aquatic animals in the aquarium. The one-way check valve can prevent the aquarium water from flowing back in the event of a power failure, thereby protecting your air pump. Ideal Tool for Aquariums The aquarium aviation connector kit is easy to install and use, suitable for all aquariums, such as fish tanks, hydroponics, heavy professionals, commercial air pumps, etc. They can be placed in salt water or fresh water, in line with most air pump products, and provide you with a complete set of standard aquarium accessories. Dear customer, Thank you for choosing our products. If there is any problem with our products, please contact us through the order information. We will be happy to serve you and solve it for you as soon as possible within 12 hours, thank you!