Sufficient Quantity: The package contains 90 black aquarium air pump control valves, which are enough to meet your daily needs and replacement. Two-way control valve: There is a two-way control valve for the aquarium air pump, no need to find the direction, easy to install, just plug it directly into the 4mm trachea. Material: The aquarium T-shaped regulating valve is made of high-quality plastic, light in weight, and . It is safe and reliable, so you can use it with confidence Wide range of applications: The aquarium air pump valve can be used in home aquariums, landscape aquariums, restaurant ornamental aquariums or other drip irrigation systems; It can be rotated to control the flow of air or water, and the switching is simple and convenient Size information: The length of the aquarium air pipe valve is approx. 38 mm / 1.5 inches, suitable for connectors with a diameter of 4 mm / 0.16 inches Material: plastic color: black Package Contents: 90 x Air Pump Control Valve Only the above