Size:16mm Quantity:1 Welcome to my store, Hope you have a pleasant shopping trip! Features:1.Reliable Material: Made of high quality ABS engineering plastic, which has good heat resistance, high toughness, corrosion resistance and no rust, etc. It has a service life. Suitable for freshwater and seawater.2.Quick Release Design: This water changer has a quick release design, it uses a tee quick connector for fast docking and disassembly, locking the water without backflow and allowing the water change to stop at any time.3.Double Seal: The main body of this water changer is designed with a double seal construction for a strong seal and no water leakage.4.Multi-purpose: Multi-purpose fish tank aquarium water change and refill drainer, water change valve. For freshwater and saltwater aquariums, recommended to be installed on the outlet pipe.Specifications:Material:ABS Engineering PlasticDiameter: 12mm/0.47", 16mm/0.63", 20mm/0.79"Weight:12mm-140g/16mm-160g/20mm-180g12mm/0.47"(for 12mm Inner Diameter Flexible Water Pipe)16mm/0.63"(for 16mm Inner Diameter Flexible Water Pipe)20mm/0.79"(for 20mm Inner Diameter Flexible Water Pipe)Package List:1 x Fish Tank Hose ConnectorNotes:1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures.2. Please allow 1-2cm slight dimension difference due to different manual measurement. Reliable Material: Made of High Quality ABS Engineering Plastic, Which Has Good Heat Resistance, High Toughness, Corrosion Resistance and No Rust, Etc. It Has A Service Life. Suitable For Freshwater and Seawater. Quick Release Design: This Water Changer Has A Quick Release Design, It Uses A Tee Quick Connector For Fast Docking and Disassembly, Locking the Water Without Backflow and Allowing the Water Change to Stop At Any Time. Double Seal: The Main Body of This Water Changer Is Designed With A Double Seal Construction For A Strong Seal and No Water Leakage. Multi-purpose: Multi-purpose Fish Tank Aquarium Water Change and Refill Drainer, Water Change Valve. For Freshwater and Saltwater Aquariums, Recommended to Be Installed on the Outlet Pipe. SHOP WITH CONFIDENCE: To provide you with the highest quality service, If you have any question, please feel free to contact us.We will provide after-sales service until you are satisfied. See more product details Reliable Material: Made of High Quality ABS Engineering Plastic, Which Has Good Heat Resistance, High Toughness, Corrosion Resistance and No Rust, Etc. It Has A Service Life. Suitable For Freshwater and Seawater. Quick Release Design: This Water Changer Has A Quick Release Design, It Uses A Tee Quick Connector For Fast Docking and Disassembly, Locking the Water Without Backflow and Allowing the Water Change to Stop At Any Time. Double Seal: The Main Body of This Water Changer Is Designed With A Double Seal Construction For A Strong Seal and No Water Leakage. Multi-purpose: Multi-purpose Fish Tank Aquarium Water Change and Refill Drainer, Water Change Valve. For Freshwater and Saltwater Aquariums, Recommended to Be Installed on the Outlet Pipe. SHOP WITH CONFIDENCE: To provide you with the highest quality service, If you have any question, please feel free to contact us.We will provide after-sales service until you are satisfied.