A perfect set of high-quality air pump accessories that allows your air pump to function as expected. Free yourself from trouble of finding matching accessories from various dazzling brands. Much more convenient and time-saving. Features: Used to supply oxygen to water, suitable for aquarium, fish tank. There is 1 glued water tube(double tubes after tearing), we need torn open before using, and one can be stored for using next time, economical and practical. Standard set of aquarium accessories for most air pump. Transparent and flexible material. Desired length for most fish tank, toxic-free and flexible. 2 check valves can prevent water from back siphoning. Air stone produces more bubbles, making it easier for oxygen to melt in the water. Any problem, please contact our store without hesitation. Honor to serve you! Specification: Name: Aquarium air pump accessories set Material: Rubber Airline tube length: 204cm Package Information: Package size: 14 * 13.5 * 2.5cm Package weight: