5/4-Piece Set Clear Glass Fountain Inflow Tube Aquarium Filter Pipe for Aquarium Water Plant Fish Tank 14mm/18mm Product Type: Clear Glass Fountain Inflow Tube Product Size: 14/18mm Highlights Made of high-quality transparent quartz glass material. Working Principle: The spherical glass bend helps the water flow smoothly. Replacement: Suitable for replacing old or broken glass water inlet pipes in fish tanks. Easy Installation: Good toughness, direct replacement, portable and easy to use. Note: Due to the light and screen setting difference, the color and design of the product may be slightly different from the picture. Please allow slight size differences due to different manual measurement