Description: Quality Acrylic Material: Crafted from sturdy and non-toxics acrylic, this Fish Tank Water Pump Filter is designed to last while ensuring the safe of your aquatic life Efficient Oxygenation: Oxygen Enrichment Adapter can be easily installable near the water outlet, it enhances oxygen levels in your aquarium without the need for additional power sources Friendly Operation: This Oxygen Connector device operates solely on drainage power to draw in external air, making it an energy-efficient choice for maintaining a healthy aquarium environment Convenient and Economical: Specifically designed for ornamental fish tanks, this user-friendly component offers a cost-effective solution for improving water quality Complete Package: The set includes 1 outlet, 1 suction cup, 1 air valve, and a 20cm air tube for the filter, providing everything you need for easy installation and operation Specification: Material: Acrylic Color: Clear Size Chart: Optional 16mm: 35x16mm/1.38x0.63inch 20mm: 40x20mm/1.57x0.79inch 25mm: 42x25mm/1.65x0.98inch Tube: 20cm/7.87inch Package Includes: 1set Fish Tank Water Pump Filter Water Outlet Note: Please allow slightly errors due to manual measurement and different monitors.