Feature:1. EASY WATER CHANGES: Aquarium water change valve is convenient and hassle free, so you don't have to go through the time and effort of manually pouring water and changing it with ease.2. 3 WAY VALVE: Fish tank water changer connector utilizes a 3 way valve to easily control the water level, ensuring that the water level in your aquarium is just right.3. COMPATIBLE WITH 16/22 HOSE: 3 way water flow control valve is compatible with 16/22 hoses and works with all types of fish tanks, making it easy to match your existing equipment.4. DURABLE AND STABLE: Aquarium water changer connector is made of durable plastic material to ensure stability and durability during long time use.5. SCENARIOS: Water changer adapter is not only suitable for home aquariums, but also for all types of aquariums to meet your water change needs in different scenarios.Specification:Item Type: Aquarium Water Change ValveMaterial: PlasticStraight Two End Connector: Connect with Internal 16mm / 0.63in External 22mm / 0.87in Water PipeValve Connection: Inner 12mm / 0.47in Outer 16mm / 0.63in Water Pipe.Package List:1 xAquarium Water Change ValveNote:Please allow some error due to manual measurement.